I have both, and I have to say they are quite different animals; perhaps since I have 4 months of use on the Tab and only one day on the Xoom. There were times yesterday when I put down the Xoom and picked up the Tab, because I could do something quicker / faster on the Tab. I am sure that will change over the next couple of weeks (like how I know the differences between my Droid 2 Global and the Tab now). One thing that won't change is the size. While I enjoy looking at the larger screen, the size/weight difference of the Xoom over the Tab makes we wonder if I will take the Xoom on my next business trip (next week) or stay with the Tab. Whichever I do take, I find I use the Droid tablet over my notebook 90 / 10. One of these days I will make one of my trips without the notebook.