I have the PlayBook. Just incredible. I'm very happy with it. I was even happy with the PlayBook OS v1 despite the reviews, but v2 is definitely a bit better.
V2 is defenitely a selling point in my opinion.
I'm not a fan of Android on tablets, but it'll definitely serve many people's needs. And aesthetically, I think they look quite good. It'll only be a matter of time before sales pick up.
They're all evolving. I'm very curious to see what Boot to Gecko turns out to be.
Despite what we can read from the many Apple fans in this forum, iOS competition is growing quickly, and are sold in cheap devices while maintaining a lot of attractiveness.
I don't like monopolies.