Playing WaW more than MW2 these days. The single player, although starting to show it's age looks-wise, still manages to thrill more than MW2 could ever hope to do. But there is one aspect of it's online play that really annoys me. If you haven't purchased all the map packs from the PSN store, then you are limited to what you can do since many people tend to play the new maps. I hate spending ages finding a game only to be kicked out because I don't own that particular map! Treyarch should have incorporated some sort of filter system that only allows you to access games with the maps you own(in my case, the ones that came on the disc). I grudge having to fork out for a few extra maps just so I can play online matches regularly.