I'm traveling to Dublin and London over the next few weeks, and I was thinking it would be nice to try out a new device while I'm there. I have an aging Treo 600 that has yellow pixels all over the screen (waiting to die). I imagine I could get a pay-as-you-go-SIM card, and maybe a data plan, and just use my Treo 600.

OR -

Maybe I could buy (and later return) a smartphone at Heathrow that I could try out while I'm there. Part of me thinks that simpler is better (I'll be on vacation and won't have tons of time to sit and talk to tech support to get up and running).

What do you think? Could I do a trial without too much hassle? If yes, any recommendations about which smartphone to try? (I need to connect to my Exchange account).