I like the very small footprint.  easy to use.  push 1,2, 3, etc and it just turns on for 1,2,3 minutes.  it's less powerful than my old one, but it cooks more evenly so it's a fair trade.  my only minor gripe is that i'm used to the door opening when i push the button.  with this one you have to push the button with one hand and pull the door open with the other.  no big deal but a little odd.