If you want to go deeper, you're going to find that as tubs get deeper they also get bit wider. I certainly haven't seen any alcove tubs that are both deep and 30" wide, and I can understand why, having nearly gotten stuck in a deep narrow old tub in Europe a few years ago. It's just a whole bunch easier to manoeuvre in a deep tub if you have those extra couple of inches. If you really can't do the extra width you're pretty much stick with a shallow tub.

Ferguson sells the Mirabelle Edenton which comes in a Mirabelle MIREDS6030RWH "Edenton" 60" Soaking Tub
Price: $660.00 (Pricing is for White)
Details and Dimensions
Tub Installation Type 3 Wall Alcove
Overall Size 59-3/4 x 29-3/4 x 20
Length 59-3/4"
Width 29-3/4"
Depth 20"
Height to Overflow 16-1/2"

Here is a link that might be useful: Mirabelle Edenton Right Drain

I just installed the Mirabelle Edenton 30x60x20. It's a great tub (especially for the money). I got an air bath, which you may not want and paid about $1850 delivered with the drain in white. I believe the price quoted above is about accurate for the regular tub. It also has a modern, attractive skirt and better looking acrylic than some other tubs in the price range. They are only sold at Ferguson.

The Edenton is large inside. I'm 5'11" and I can fully stretch my legs in it. There were only two other tubs that I could fit in and this one is bigger and deeper.

If you want to check it out, my remodel is linked below.

Here is a link that might be useful: If you want to see the tub in my remodel

Thanks so much, you two, for pointing me toward the Edenton. That seems like exactly the functional-aesthetic-financial-dimensional blend I hoped the gardenwebs would deliver. And while I wasn't previously familiar with Ferguson and was prepared to discover their solitary location was in Wyoming, it looks like you can't catapult a NYC rat across the Hudson without hitting one. Yay!

And hey, heckuva job on your bathroom, Kevin - bravo.

Have you considered the Kohler Expanse? It comes as 60" x 30" and the middle curves out slightly. The GW user, dedtired, has one and likes it. Depth to overflow is almost 13". I think it is a contemporary design and would not look like your typical builder model that you seem to be trying to get away from. Price was under $600 at faucetdirect.

Link to it on Kohler site

Bosshogg,
The hourglass does have an integrated tiling flange and holds more water than any other alcove tub I've seen. I haven't been able to get into one to test the comfort level, but it is an option.
salbwil

I hope you don't mind if I ask a question about that Mirabelle Edenton to KevinMP. I'm also looking for a 30" tub for a small bath.

Is the end of the tub where you would lean back straight or does it slant? The thing I hate the most about my current tub is that it has a perfectly straight back which is very uncomfortable.

It slants. Not as much as the Hydrosystems (which also has a heated backrest), but it slants plenty. That's the problem with a lot of 60" tubs, too: they either slant too much, have too much decking, or slant on both sides of the tub, cutting into leg room. This one is kind of just right, at least for me.

See:

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KevinMP, Thanks so much. Your bathroom looks great.

KevinMP,
Any chance your bathroom remodel photos are still available someplace? I'd love to see them.