What online stock trading company should I use? I want to use 2000 to purchase a stock?

Can anyone recommend me an online trading company such as ScottTrade, eTrade, AmeriTrade, etc. Which one offers low fees and can u tell me about your experiences? I want to purchase a thousand or two of a low priced stock, what are the boundaries if I wanted to take the money back out after a year of positive growth? Please help, economy sucks.