Product review (5 stars): A great double-wall-oven - especially for Foodies
This is my 2nd GE Profile double wall oven.  The previous one would have lasted longer but the appliance installer installed it incorrectly.  That had NOTHING to do with the manufacturer and is a rant that wouldn't be helpful here. Suffice it to say that if he took the trouble to do the job correctly, it'd still be working.

I use one or both ovens nearly every day and the temperature setting is accurate and heating is relatively even inside the oven. The great advantage of a double-wall-oven is that if you're working on a large number of dishes, and they need different temperatures, you're not having to continually jockey dishes in and out of the oven, changing the temperature, switching to 'broil', etc. Life is much, much easier. Especially if you're doing Thanksgiving for a large group, as I do.

The top oven is convection-or-conventional, the bottom one is conventional-only. The controls are touch-panel on the top of the unit and are fairly intuitive (e.g. press 'Bake', then the number-panel for the temperature, then 'start'). There's a nice, big, easy-to-read display so I can see the temperature and timer from across the room. There are also lockout controls so you can set a numeric password and disable the controls if you have young children or special-needs family members who shouldn't be operating the ovens.

GE has eliminated the pesky bottom heating element - it was a nuisance to clean round - and placed it underneath the oven floor. So the sides and bottom are unobstructed. That makes cleaning up large drips much easier.  The broiler element is still exposed underneath the oven 'ceiling', but that's pretty much the same case with all brands.

The ovens will automatically shut off after 12 hours - to avoid disasters from forgetful cooks. But there are instructions for overriding this.

On my old ovens, the lowest I could set the temperature was 170 degrees. The new ones have a 'Warm' setting that's great for keeping things like pizza-still-inside-the-cardboard-box warm without scorching. Its also got great possibilities as a dryer if you need a dehydrator for fruit, vegetables, etc.

GE has made both ovens the same size, which really helps when you're shuffling racks around. On the older ones, the bottom oven was slightly larger than the top, so the racks were different-size.

There's a temperature-probe socket in the to oven (I recall you had to buy the temperature probe separately). I've never used it. It seemed prone to failure on the first GE Profile ovens I owned. I'd sooner go with a Taylor remote oven thermometer, which is inexpensive and foolproof. It will beep at you when your roast, etc. hits a specific, pre-set temperature.

If you install this appliance yourself (as I did with the new one), there are a very precise set of installation instructions, including enclosure dimension,  electrical connections, etc.  The only thing I had to customize was making a temporary wood platform at the same height as the enclosure so I could finish wiring and then slide the oven into the enclosure.  This is a really heavy appliance and having a 2nd set of hands available is a real plus.

The only criticisms/complaints I have about this appliance are 1.) When you've got the oven AND the kitchen timer going, and the timer starts beeping, if you set 'Clear/Off', it turns off the timer AND the oven. You have to press 'Kitchen Timer' and then '0' on the number panel to reset it to zero and effectively turn it off.  2.) The bottom self-clean door-latch went out after a year and a half and I had to replace the part. 3.) Self-Clean still leaves little bits of gunk around the edges of the doors and the front edge of each oven. The only way I've been able to clean this is with conventional oven cleaner.

Parts are ridiculously easy to locate for this oven. All you have to do is enter the model number in a web search engine and you can find an exploded parts diagram and numerous parts suppliers.

Overall, if I had to buy a wall oven appliance again, I'd definitely go with GE Profile double wall oven