We went with an Americh Turo tub. It was the only one that was 18 inches high, instead of the 20-22 typical of tubs that have the whirlpool features. This tub can also be ordered with a whirlpool, but I didn't look into that since we wanted a plain tub. So far, it's working out well as a tub and shower combo. However, it does feel deep if it were filled to capacity - I may worry if I had small children (but, I don't have kids, so I'm not sure at what age I would feel comfortable).

I know I probably went overboard, but I have been searching Houzz for shower/tub combos for myself if I decide to go in that direction. Most of these pictures have Master Bath titles - they tend to be small houses or apartments in large cities where space is an issue. They all have a generous sized tub. A few have extra shower bling and even a separate tub filler. All of them have material choices and the level of tile work that you see in a master bathroom. I'm sure that if I searched Houzz I could find just as many, or even more, remodels of small master baths where they have just built a walk in shower. I think the decision to do a shower/tub may be a personal choice because they want a soaking tub - since they are titled Master I'm assuming the bath is not the only bath in the house and they could easily just go with a shower. [[(https://www.houzz.com/photos/lakewood-bathroom-contemporary-bathroom-denver-phvw-vp~564696) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by Aurora General Contractors Heritage Home Improvement [[(https://www.houzz.com/photos/tamara-mack-design-interiors-traditional-bathroom-san-francisco-phvw-vp~1860108) [Transitional Bathroom[(https://www.houzz.com/photos/transitional-bathroom-ideas-phbr1-bp~t_712~s_2112) by San Francisco Interior Designers & Decorators Tamara Mack Design [[(https://www.houzz.com/photos/jackson-hole-residence-rustic-bathroom-portland-phvw-vp~1116073) [Rustic Bathroom[(https://www.houzz.com/photos/rustic-bathroom-ideas-phbr1-bp~t_712~s_2111) by Portland Architects & Designers Howells Architecture + Design, LLC [[(https://www.houzz.com/photos/bath-traditional-bathroom-charlotte-phvw-vp~1153799) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by Charlotte Architects & Designers Don Duffy Architecture [[(https://www.houzz.com/photos/tile-showers-traditional-bathroom-houston-phvw-vp~1597876) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by Lake Jackson Kitchen & Bath Remodelers JC Remodeling & Restoration, LLC [[(https://www.houzz.com/photos/icon-development-tofino-job-contemporary-bathroom-vancouver-phvw-vp~2443799) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by Nanaimo Tile, Stone & Countertops City Tile [[(https://www.houzz.com/photos/riverside-drive-super-groovy-masterpiece-contemporary-bathroom-new-york-phvw-vp~2456534) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by New York General Contractors Rusk Renovation [[(https://www.houzz.com/photos/burns-park-addition-and-remodeling-2000-and-2006-traditional-bathroom-detroit-phvw-vp~374078) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by Canton Architects & Designers Studio Z Architecture [[(https://www.houzz.com/photos/erica-islas-silverlake-contemporary-bathroom-los-angeles-phvw-vp~190979) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by Culver City Interior Designers & Decorators Erica Islas / EMI Interior Design, Inc. [[(https://www.houzz.com/photos/hall-bathroom-traditional-bathroom-new-york-phvw-vp~678390) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by New York Interior Designers & Decorators Nathan Cuttle Design [[(https://www.houzz.com/photos/master-bathroom-highrise-new-york-city-contemporary-bathroom-new-york-phvw-vp~89484) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by New York Photographers Vanni Archive/Architectural Photography [[(https://www.houzz.com/photos/carnegie-hill-residence-traditional-bathroom-new-york-phvw-vp~204853) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by New York Architects & Designers Incorporated[[(https://www.houzz.com/photos/upper-west-side-nyc-apartment-renovation-transitional-bathroom-new-york-phvw-vp~6968329) [Transitional Bathroom[(https://www.houzz.com/photos/transitional-bathroom-ideas-phbr1-bp~t_712~s_2112) by New York Architects & Designers John M Reimnitz Architect PC div> [[(https://www.houzz.com/photos/mediterranean-bathroom-mediterranean-bathroom-san-francisco-phvw-vp~1042841) [Mediterranean Bathroom[(https://www.houzz.com/photos/mediterranean-bathroom-ideas-phbr1-bp~t_712~s_2109) [[(https://www.houzz.com/photos/nyc-bathrooms-traditional-bathroom-phvw-vp~7215764) [Traditional Bathroom[(https://www.houzz.com/photos/traditional-bathroom-ideas-phbr1-bp~t_712~s_2107) by New York Design-Build Firms DELUXE Design & Construction [[(https://www.houzz.com/photos/cat-mountain-greenbelt-homes-austin-tx-transitional-bathroom-austin-phvw-vp~834553) [Eclectic Bathroom[(https://www.houzz.com/photos/eclectic-bathroom-ideas-phbr1-bp~t_712~s_2104) by Austin General Contractors Greenbelt Construction This post was edited by Anna_in_TX on Tue, Feb 11, 14 at 6:40

once you install the cement board (so that it sits above the tub flange), fill in that channel with thinset, and let it harden. once hard, go ahead and install your Kerdi, so that it's sitting no more than 1/8" off the tub. Then you can seal it with Kerdi-fix. That's the "book" explanation. If it were me, I'd use the same color siliconized latex caulking as my grout and seal it with that. Reason being that then you wouldn't have to worry about the color of the Kerdi-fix sticking out from under the tile.

You can get a 5' "soaker" tub with wider stance and deeper seat for about $200. For a 5' jacuzzi (check out the one fifth on the list), it'll run you about $800. Both take only a couple of inches either direction than a "standard size" tub.