Its upgrade time. I'm with o2 and I want a phone that

Has good battery life
Does Sat Nav well
Makes calls
Sends texts
Isn't all that huge

I'm absolutely baffled, there's too much choice and worse conflicting reports.

I dont want an I Phone ( way too expensive), a dell phone (too huge) or a pocket computer I just wont use it.

Does anyone have personal experience with things like the Nokia X6 etc