if you already have a phone, check out straighttalk.com, they give you unlimited minutes, text, and internet for 45 bucks a month. been using them for about a year now with no problems at all.
I've been considering going to ST.
Do you use that company? If so, how is the coverage, and is the internet 4G. If it is, does it get throttled after a certain amount of usage in a month?
i use an at&t phone, so i got their at&t sim card. it's the EXACT same service as at&t. reception has been no less than amazing everywhere i've been in the usa with it (which is a LOT of places) and the only place i had issues was in key west (calls were fine, internet was edge speeds on average). i have a 4g phone and as far as i could tell they were 4g speeds in most cities. the data is 'unlimited' which we all know is bullshit... the rumor is they cut you off around 3-4gb. ive never run up more than 3.5gb in a month. it's not a hard limit as far as i can tell.