Street Fighter IV is easily the best fighting game released in years. It's hugely accessible but includes the depth that serious gamers are searching for, and all of it is viable to bring online for some great action. The graphics are fantastic and the mix of old and new characters are admirable, and while the method of unlocking them - and the cost to buy them new costumes - can be aggravating, there's still so much to love here.
That being said, the PS3 and 360 versions both run exceptionally well, so if you're trying to decide which system to buy the game on, get it for whichever console you have a better controller setup for. You'll need it, especially when you jump into the online play. Yes, Street Fighter is back, and hopefully this time it'll get the fanbase and support this series has always deserved.