The only thing the Thermador didn't have was a convection fan. It was self clean, broil, timed bake, bake, micro, broil/micro, bake/micro with a low, medium or high setting for the microwave. I personally rarely used the microwave only setting since I had a stand alone microwave. From what I understand that is why it went out of favor with consumers - it was a poor micro-only oven. Now as to the design flaws of the built-in Jenn-Air convection/microwave, I'm going to be adding to this so I don't make any mistakes and misrepresent it. I rarely use the Jenn-Air convection/microwave any more. My biggest complaint is that it turns itself off. I'll preheat it, hear the bell that it reached temperature and when I'm finished prepping find the oven has turned off. It will only preheat for a certain amount of time and after that time has been reached, it will exhaust the heat from the oven. A second complaint is the temperature fluctuation - more frequently lower than higher. The temperature is displayed on the digital readout. Heaven forbid that you open the door to check on your food, it takes forever to re-reach the set temperature. The oven was half programmed correctly. The oven does permit one to set the convection/roast/microwave to any combination one would desire. It's the convection/bake/microwave that can't be set other than the reprogrammed settings. So the capability is there - just incomplete. There is one thing that we do use the oven for regularly and that is reheating pizza, pancakes and waffles on the crisper pan. If you are into convenience foods then this oven is for you. There are just two of us and we both cook so normally we would use the smaller convection/microwave oven more - we don't because of our frustration with the product. As I had said we did use the GE convection/microwave more than our full-sized oven. I will be adding to this post. There are more complaints. I just want to document them correctly.

This is tough because it is going into my 90 year old's mother's house, where she will not be able to understand any bells and whistles, BUT I own the house, and ultimately will be living in it. We probably won't be baking everyday, but I will be retired in a few years, and I'm sure we will use our kitchen more often. I don't need top of the line, but I don't want low end either. I looked at the GE Profile as one of my options with the Advantium 120. People were critical of the Advantium, but I think that may be older models? Well, the Miele with a Masterchef on top would be too cool, but I think that tops $6k. I was probably looking at around $3k, unless you convince me otherwise. ;-)

I don't have the Cuisinart one, but the Panasonic. I like it alot & use the convection function regularly. There is just the two of us & I find it good for baking casseroles & small things. I use it more than my big oven.

So, make a niche(s) with the proper electric service and size to have a built-in put in if you really need it to sell (but I bet you won't)--if you're planning to sell within three years, get the built-ins already, but otherwise, they're going to be just so many used appliances. If yours are truly ratty, you can buy new versions of each. If you WANT a speed oven, and intend to use it as such, that's another story. Go for it! Read through the manuals, etc. But I think you'll find that it's not at all the same thing as your Breville toaster oven. You can use the convection oven settings on a speed oven to perform some of the same functions, but it's a real oven, with limitations, not a toaster that tap dances. I sometimes use my speed oven the way others use a toaster oven--mainly for heating up frozen appetizers or reheating casseroles when other ovens are full, but my old (dead) toaster oven was beloved for making great toast, which a speed oven isn't, and not for other uses. I do zap sandwiches on MW mode, and once in awhile lightly defrost or melt, but if I used a microwave more, I wouldn't have such an expensive machine doing it. I agree with putting enough thought into a remodel that it won't limit resale, because you never know what the future will bring--thus make sure there's place for built-ins to be built into--but unless it's a flip, it should be designed for your own use and enjoyment, and you used the key words "heavily use" and "love".