I just finished my Gamefly trial, and I wasn't very happy with it. The games took over a week to ship (!), and for $21 a month and only two titles out at a time, it wasn't working for me. I go through games really, really fast, so waiting a week to get a new one just.. yeah no.
Right now, I'm looking at Gamerang and NumbThumb, although RedOctane and GottaPlay are options at this point as well.
What're your opinions on those, or other ones I might've overlooked? (My systems are: PS2, Gamecube, DS, and the only reason I won't use Blockbuster is because they don't rent DS games.)