Well, I guess that depends
on what you're after. Me, I want it to work, I want it to run the current web well, and I really like paying a third of the price of the apple stuff to get that.
It's more stable than my iPhone is. It's faster than the iPads in the office. It's not a mobile device (as in, no GSM/3G/whatev), so the bb bridge makes sense in that context. I understand that future playbooks will be mobile enabled, at which point there won't be any need for the bridge... but this is not that device. After all, the blackberry stuff is the only stuff that gets banned by absolutist states because they can't break it. I can understand why RIM is loath to give that up for their email system.
Hardware wise, it's easily competitive (and often exceeds) the Apple stuff we have here. Despite the fact that the software we're working on here is mostly targetted at iOS for the mobile web, it all runs better on playbook because the hardware is beefier.
Now, it might not suit your needs very well, but afaic it's the only tablet I've seen that comes close (and now with the new system, often exceeds) the apple capabilities. The one that I'm very very happy about is the new text input system. To be blunt, it crushes the equivalent apple software; faster, easier... It's Just Better. A lot better. You'd need to try it to see how much better, but I have both classes of device, and we are doing dev work at my firm for all of the above, so we're all getting heavy use of all the available iOS stuff as well as playbook (and eventually all the new RIM stuff as they complete their transition to QNX as the base system for all their devices) and I'm going to tell you that I can almost easily beat you in both time and keystrokes just as soon as there are real sentences and paragraphs involved in composing text. Easily. I want to use this as more than just a toy... the text input system makes that possible.
It's also helped by its stability. AFAICT, playbooks don't crash. Ever. I've seen apps on the playbook crash, yes, but the playbook itself? Not once.
Finally, I'd think you should be encouraging viable competitors to iOS like the playbook (because I happen to agree with you about Android... a lot of my friends here are on android and I'll take qnx's stability over that, Thank You Very Much) because hardware and software monocultures in a market are bad for consumers.