There is a lot written on this forum about the differences between gas and electric ovens.

The short version-

Gas has a drier cooking environment and more heat and moisture in your kitchen unless it is vented outside. Convection is on and off. Simple without computer boards.

Electric ovens hold onto the moisture from your food while cooking so a moister environment. Many more features available, but these require computer boards to run. Depending on the model you buy, has more of a possibility for self clean or European convection, although many will tell you not to run the self clean because you might damage the computer boards.

Yes you are very limited in your choices. If you are considering American, there are some posts about how it bakes and service issues.

Just to clarify, I think wekick's reference to "American" was to the American Range Company which makes a series of pro-styled gas wall ovens with (IIRC) the model name "Legacy Series."

As wekick says, there have been tons of discussions here on the subject. If you were having trouble finding them, try going out to google with this search string, "gardenweb + gas ovens versus electric ovens." The topic most frequently comes up in discussions of dual fuel ranges, so you can search on that topic as well.

You are correct about the current paltry selection of gas wall ovens. You may be able to find more at the Sears web site, but my recollection is that most of them were 24" models designed to fit in spaces for older models. Also, FWIW, most of those major brand models have the same kinds of circuit board controls found on pretty much all major brand ovens and ranges, electric and gas. As far as I could tell (from the last time I helped a friend shop for a replacement oven), you only get get "simple" with the premium priced pro-styled gas oven models from the likes of Blue Star and American Range.

Thanks for the comments. I did a search but could find very little info on gas double wall ovens. I did see discussions on gas vs electric range/oven combos but that's not really relevant to our remodel because we're definitely installing a double wall oven and separate gas range. I ran it by my contractor and he said he'd just use the 220V circuit and make it an electric wall oven. I really was kind of concerned with how difficult it was to even find gas double wall ovens online available for purchase.

Sorry, I meant gas cooktop, not gas range. And we're doing a separate double wall oven. So we only will have 2 ovens in the kitchen, the double wall oven. I think I'm going to have him just run the 220V circuit for it and go electric as the lack of availability for gas double wall ovens concerns me a bit.

Good choice. Glad your contractor agrees. I would wish you luck with completing the rest of your remodel, but I do not want to risk jinxing anything. :>)