I'm going to agree with Pascal that we disagree on the microwave/convection combo unit. I've baked with both and I just hate that combo thing from a results standpoint. True, I doubt he's ever had a guest on the 70-footer he runs return something that was made in the combo oven, but I think for someone to complain to that extent, it would have to be really, really bad to begin with. But I still say they don't bake the same.
I set out today to replicate a Boston Butt pork roast that has been smoked for 12 hours, but I wanted it in "boat time" (about an hour) instead, especially since we don't have a smoker onboard. I got out my pressure cooker (a boat's best friend from a galley perspective), seasoned a pork roast, and cooked it with a special juice in the bottom of the cooker for 1 hour, 15 minutes. Tender as could be. Then, I put it in the oven under the broiler to put some "bark" on it...just like the smoker does. Can't do that in a microwave/convection combo oven.
Besides...when you need to melt a little butter and your oven is in use or too hot for non-oven proof dishes or steam some broccoli...what are you going to use? The old stovetop and a pot? The combo puts your microwave out of business when you're using the oven or when it's too hot for plastic. Oh, and don't push the wrong button when you think you're going to microwave. A friend of mine did that and had a melted plastic mess to clean up.
When I re-do my galley later this year, I'm going with a 24" Fagor oven that has the side-opening door since the oven will be at chest level rather than down on the floor. That Fagor has 3 elements with a super-fast preheat feature.
....and induction cooktop to boot!