I think a NIT with integrated HSPA would be nice - if I could do away with my cell phone and just carry a NIT and use VoIP then I would be set. Of course, until Canadian mobile companies offer reasonably priced data plans it doesn't matter much for me.

The biggest problem I have with my n800 is that along my travel route and around my office, there aren't really many open WiFi access points so I can't use it for it's primary use most of the time (pretty much any time except when I'm at home, in which case I could use a desktop computer). Of course, as I said, this isn't so much a problem with the n800 itself as it is with the service providers - I would gladly tether to my cell with bluetooth if it weren't prohibitively expensive.