The prices I gave you are based off of Verizon Wireless, that is who I use. Sprint is very similiar and I believe the price is the same.

If you travel outside of the US, which I know you go back home to the UK, check out Cingular as they are GSM and you can use your phone there. Verizon/Sprint both CDMA will only work in the U.S./Canada/Japan and South Korea, but CDMA is a quicker network for now.

If Cingular would have worked at my house better, I would have probably switched from Verizon to them, mainly for world mobility when I go on cruises it work outside of the U.S.