You should try the Sprint Instinct. There are many advantages including the adding the simply everything plan and the best EVDO network. consider these comparisons
Network five times the coverage of AT&T's current 3G network (based on square miles). covers twice the number of cities and airports compared to AT&T's 3G network.
Features: The Instinct offers features that iPhone 3G doesn't
Speech-activated search based on where you are (pizza, bookstore, coffeeshop ...)
Live TV: 25 channels of live TV, on-demand clips and full-length episodes
Exclusive applications and content, including NFL Mobile and NASCAR Sprint Cup Mobile
Spoken turn-by-turn directions
And this is a biggie: The instinct has a removable battery with a spare. With iPhone, users have to take it back to a service provider.
Value: Sprint is a much better value
The cost of the Instinct is $129 vs. $199 for the lowest cost iPhone 3G -- a $70 savings. Sprint's service plans across the board are dramatically more cost effective if you compare. Customers can save from $1,400 to almost $2,000 over a two-year contract period