If you are yet to make the decision on a HD console. Well MGS 4, GTA 4, COD 4, UnCharted, Ratchet:ToD. On the way: LBP, Socom, R2, GT 5, FF XIII, FF XIII Versus etc. Great list of games there. well buy a PS3 now. $400 is very cheap. You get free online which is the best. HOME is great and out in two months time.
I have bought my PS3 on June 12th, the day MGS 4 launched it is amazing, great game. I have passed it three times and MGO was a blast too. I just picked up UnCharted, GTA 4 and COD 4. Looking forward to the upcoming games.
PS3 is the best console I have ever played. The graphics and realism is breath taking. Blu-Ray all the way baby.