I am finding it great for surfing the web, which is what I bought a net book for last summer. The net book is way too slow, though, and I'm not using it. The ipad isngreat for that - very snappy.
I am finding (obvious?) limitations with it, which could be due to the relative 'newness' of the apps. For instance, in gmail I can't view pics embedded in a long email (when I scroll past what I can initially see when opening the email the remaining email is completely blank).
I also just bought (well, work bought) the iWorks suite - Pages, Numbers, and Keynote - to evaluate and test interoperability with Office apps. The reviews I've read on them are not at all favorable in that respect.
No longer a BES Admin, but it was fun while it lasted!