I've tried iPad and iPad2 - too limited
Galaxy tab (7 inch) - LOVED it, but couldn't justify keeping it anymore
Xoom - It was great, but didn't really have a use for it.
Acer Iconia - Really liked it, but again didn't do everything I wanted.
Toshiba Thrive - So far, I'm thinking I'll be able to replace my laptop. I can even hook this thing to a TV or monitor (with adapter) and use a full sized keyboard and mouse, external hard drive, game controller, whatever.
For what I do on my laptop, since I don't really develop anymore, I can do just about everything on the Thrive.
Even the movie editor, although basic, is working out for me so far..
Granted I've only had it a day and a half, but so far so good.