Samsung SCH-i600 / SP-i600

ok, curious. what plans do you guys have? I have heard you need to get the data plan/National Access on top of your regular 'voice' plan. Do you need to get the $44.99 plan/unlimited? Can't u just use your standard America's Choice plan to access the internet, etc...?

Also what is the 5MB national access plan do for you?

Thanks, just a bit confused...