Well, part of the reason I was interested in this again, is because I'm looking at getting a Storm 2. More screen, better reading, you know
I don't mind the Mobipocket software at all, and if it just converted epubs properly, I'd be deliriously happy with it.
I installed Kobo's app for BB in hopes that it would read unDRM'd epubs, but I can't even find where or if Kobo's app stores them on the phone. I'm guessing with them you read them from their servers, while online? With an unlimited data package that's not a huge deal, but it definitely does prevent you from adding your own material to the app!