Redbox is the best rental system around here, it's the only choice (cheapest too) other than blockbuster and a few other local rental places which charge $4+ for only one rental. Redbox is only $1 for a rental, so you can get 4 for the price of one rental at blockbuster. Don't complain if the codes don't work it's only a dollar! The only other free way to get dvds is illegally so I wouldn't complain.
