I had an iPad (sold quickly - hated the thing, far too limited in CODECs, for example), I have an Android tablet and I have a PlayBook. And yes, I even paid for at least one of those.
The PlayBook is a great bit of kit - nice size, swift, great UI (I really like the from-bezel swiping and the lack of a home screen). But the application selection is truly, truly dire - I don't know about waiting for the "run Android apps" engine, but I'd be better off getting out my old Palm III for application support. And the lack of native email is just rubbish... "take two smart devices into the shower? Er, yes, because they're symbiotically joined at the hip". Even then, when you're bridged to a Blackberry, you don't have full functionality - try creating a new appointment and mark it "private", for example.
To me, they've got one shot at a firmware upgrade to make the difference (perhaps linked to the upcoming cellular version), and after that... well, as a device to kick around the kitchen and quickly browse the web, it's great; as a toy to hand the kids to play flash-based games, it works marvellously. But not at that price, though, I'm afraid.