I was with Sprint for 4 years and had a sweet plan (650/3000 for $35), but I have no regrets about having left that behind for the Kyocera 7135 and Verizon. The Verizon plan is more expensive (500/2000 for $50), but the better coverage (very impressive!) and consistently excellent customer service have made that much more bearable. That, in addition to the 7135, makes it a no brainer!