show me a pic of a gtr with rust ive only ever seen 1, alot of them dont ever see rain. theres only 1 guy i know crazy enough to leave 1 out in the weather damn you grim.
newer cars are worth x amount, 2 years time they are worth x/2 depreciation vs fixing costs
some people buy brand new 4bangers every 3 years saying its so they dont lose all there cash when the car becomes unreliable, so you save about $1k on repairs and lose $10k every 3 years buying the next car.
old cars are always a gamble but if you find a good 1 they are a friggen bargin compared to new 1s, they best avoided if you getting some crazy loan and cant afford to repair them though.
5yrs time the GTR is gonna be worth lot more than a v35 remember.
when i got mine the 34gtr was more than double the price, which some may say yeah its more reliable but at that price i could buy 2 32 gtr's. 1 go's boom i still have a enough cash for a 2nd.
also the cars you are comparing seem a bit strange, you got 1 old very powerful, 1 newer prob more of a buisness man type look but not that quick, and i dont know what rx7 u gonna get for 20k fc's are like 7k and fd's were like 40k i thought