We had the Gemini and loved it. We got it when Maytag first came out with them. Like you are planning, we primarily used the smaller oven. The lower oven being low to the ground really wasn't an issue due to the pull out glide racks--it made it so easy to get things in and out of that oven. Whichever range you choose, I would make sure that it has those glide racks in the bottom oven. I bake alot and I had excellent results no matter which oven I used.

I have a Maytag double oven range that I love, and I do believe the bottom oven would fit a large ham; however, I will say that it is difficult at times to bend down and lift a heavy item from the lower oven to the counter. For me, it's still worth it because I don't use the bottom oven very often - the smaller, top oven is wonderful and I don't think I could give it up after having it!

While you are waiting for further responses, you might try searching on "OTR" and the 240v Advantium. There have been numbers of recent discussions of both subjects and those threads may shed some light on the subject of how well they work as second ovens and microwave substitutes. Also, you might find some useful info in the current thread on "speedovens vs. microwaves?" I don't recall a recent thread that is specifically about using the 240v Advantium OTR above an induction range, but Advantiums have been in use for the better part of a decade and there may be some discussion of the topic of how well they work as a second oven. As for venting performance. the knock on OTR units generally is that you've got a flat bottom surface that only extends over the back burners and the vent/intakes depend on suction to draw vapor from pots on the front burners. It is just less effective than a larger dedicated range hood, particularly a canopy hood. My recollection is that LG made an OTR with a slide-out vent-pick-up tray that extends over the front burners but I don't think it had a full-on oven capabilities like the Advantiums. Anyway, we deal with the kitchen spaces we have and OTRs are sometimes the option that fits. The fact that a canopy hood would be better may not matter in such situations. IIRC, Luv2putt posted on using an OTR with his Viking induction range and was reasonably happy with it. I think there have been some discussions of folks who were satisfied in using OTRs with Wolf and NXR all gas ranges, as well, where the venting needs are more strenuous than with induction. If you want to search for those posts, Nunyabiz1 is a name that I recall having posted on the subject. On looking at a Samsung first, be aware that there are three different Samsung induction ranges currently available in the US market: two freestanding models (NE597NOPBSR and NE 595NOPBSR) which have been on the market for three years and are priced between $1200 and $1800 depending on model and holiday sales pricing, and the slide-in with the divisible oven (NE58H9970WS) which was released last fall and runs $2500 to $3k plus depending on vendor and holidays. The slide-in has a lot to recommend it but there are some limitations including having only 10 burner heat settings (the freestanding models have 20). I haven't seen much info on how well the divisible oven works when the divider is in place, but Samsung has been selling Canadians a freestanding version with this feature (NE599NOPBSR) and you could look for reviews on that range.

Sorry, I just noticed you said electric in the title, I didn't read carefully enough. The main reason I was asking is that with gas, the KA will not let you use the surface burners with the power off unlike most other gas ranges. Since you're electric that's not an issue for you but I still like the GE better. I wouldn't worry about mixing brands, the stainless won't be different enough to cause an issue, and stainless often varies within the same brand anyhow since the appliances are usually made in different factories. How hard is your water? If it's at all hard and you don't have a water softener I would recommend buying a dishwasher with one built in. It's especially important nowadays with no more phosphates in the detergent. Yes it's expensive, but you'll notice the difference in performance, and the parts will hold up better over time. Have you considered Bosch for the dishwasher?