Thanks for the tips so far. I have played around with a friend's iphone and like the interface, but it is way too slow for what I need it to do. The Blackjack also caught my eye, but no wifi killed that for me. I think I am going to go with the AT&T Tilt. I'm waiting for the local store to restock so I can look at them in person.
You may be able to find a euro-spec Blackjack with WiFi - a colleague of mine who works out of France has one.