The looks of each can be changed so cost aside, it should not matter too much. If you can't afford the cobra don't get it. Also check your insurance and see how much each will cost. I almost bought a 93 r1 rx7 when I was 20 and I was smart enough to call the insurance to see how much it would cost in additon to my other cars. Even as a weekend car my insurance would have trippled... Needless to say I don't have an Rx7 yet.
Kevin