Ron, the convection microwave in the newer models is lower than the one you have. We have the 2552 so the oven is not in the slide and is thus in the higher configuration. At 5'5" I don't have any real problem with it. It is a reach up to get food out but we have the same set up at my son's house when we stay there. If it doesn't interfere with cooking on the range top, the lower oven in the 2910 would be nice. I believe that configuration switches the fridge OFF the slide. Can a 2910 owner let us know if you still gain storage space under the fridge? If not, I suspect they put mechanicals there and you gain storage elsewhere (where the mechanicals are in the other models).
So the set up is:
Fridge on slide/oven NOT on slide - oven is higher, more space above cooktop, no storage under fridge.
Fridge NOT on slide/oven on slide - oven is lower, less space above cooktop, possible storage under fridge