Whirlpool 0.7 Cu. Ft. White Countertop Microwave Oven - WMC10007AW

We needed to replace our prior microwave with one capable of mounting under a cabinet since we have a small kitchen with limited counter space. This narrowed the field to 2 models, the Whirlpool 0.7 Countertop being one (with no user reviews available at the time) and the other, another manufacturer's model with terrible user reviews. I hoped for the best and ordered the Whirlpool. It IS compact though it was much more of a challenge to mount than our previous larger, mountable unit had been. On to performance! Our primary use of a microwave is for heating or defrosting things and, occasionally, to bake potatoes or pop popcorn - very basic stuff. The Whirlpool takes almost a third longer to heat food and liquids than our previous model, groaning the whole time the glass plate turns. The plate is also prone to coming off its rollers if dishes placed on it aren't exactly in the middle. The Defrost feature only works if you know the weight of frozen items (and if they are a pound or more). Otherwise, you have to use 30% cooking power which seems to take almost double the time to defrost than our previous unit had taken. On the plus side, the unit is fairly easy to use (no advanced features!), easy to clean and has a good alert that sounds every few minutes so there's no forgetting something in it. Overall, this is a very BASIC unit which is understandable considering its low cost but I had really hoped it would perform better. Maybe Whirlpool and other microwave manufacturers should consider designing compact high-performance units for those of us with very small kitchens. I would gladly pay 2 or 3 times as much for it!!