I prefer to grind b-spec through dream car championship with the vetted x2010 for my credits. I do however save on USB before purchasing a high end car, then I gift the car to a secondary account (one account is sufficient unless you are doing this for money selling dupes on eBay.) at the same time I gift 5 paint chips, I obtained my Matt black from purchasing the lexus lfa car. I do save and backup all gifts on second account in case a friend wants a car or something, I won't use it for gaining cars I don't have, I prefer to earn the "original" car I want to obtain, what I don't like is the grinding for credits and the paint chip nonsense, that's why I use the USB save method. I want a second set of all my RM cars to paint them all Matt black so they are not million credit cars, I will buy them, not dupe them, I won't save USB method, I will just grind out 2 or 3 dream car championships in b-spec, while on this forum or working on the computer doing emails etc.......
So if paint chip duping and never spending a million credits at a clip through the USB save system is cheating, I guess I am a 40 year old professional, husband and father of 2 who plays GT 5 for an hour or 2 at best each night when all are cozy in their beds who just wants a nice virtual garage to drool over type of cheater. Screw it, I don't care. I am B-spec lvl 28 and A-spec level 23 and have all liscenses and earned them all fair and square.