This phone its self is great.
But be cautious if you are looking for one specifically to use with iTunes: from all reports very few models are shipping with iTunes software at the moment (using Motorola's Digital Audio Player instead). Confirm with the buyer that the phone does actually include iTunes.
My phone (UK retail) does not have iTunes, but I'm not too worried, as I say the phone is fantastic. Perhaps it will be possible to install iTunes later by flashing the firmware, but I don't have much experience in that area (yet)!