I have all those 5 plus GTC, GT4P, TT, and GTHD. I actually started with GT2, but later back catalogued to GT1. I also back catalogued to the originals on PGR4, FM3, MotoGP:URT '07, RalliSport Challenge 2, ToCA Race Driver, Colin McRae Rally 2 and V-Rally 2. I even had to buy an Original Xbox as Moto GP:Ultimate Racing Technology 3 and RalliSport Challenge 2 are not playable on the X360 - but are really good games - also being a newcomer to Xbox, I was very lucky to have discovered the Original Xbox games only a few weeks before they shut down OXbox support and managed to get the PGR2 and RSC2 DLC only days before it was gone!!