Not a day goes by these days that I don't wish my Roadster was a stick. But is that buyer's remorse? No, not really.
I remember why I bought my particular car:
1) LOW miles (13,351 at the time)
2) ONE owner (who obviously took care of this car to the point that driving it in the rain was out of the question)
3) Documented service record (a Carfacts report which, of course, was not a very long document, but it did show the oil change at 7600 miles and the replacement radio at 3300 miles)
4) 100% Georgia titled and owned car (no road salt)
5) four year old car with showroom finish - from sitting in a garage for four years
I've now got ALMOST 30,000 miles on it. The ONLY problem I've seen so far is the stupid electric trunk lock failure. I fixed it myself, because my dealer is 1 1/2 hours away AND because, well, I forgot I had a warranty on it! (Yea, really!)
I bought my car because I did my homework, researched the car to see if they were telling me the truth, and after all of that, I got it in writing that I could return the car for a full refund anytime in the first 30 days (they offered this when I got cold feet, not sure it it's ALWAYS the case there or not).
I am now still considering a 6 speed coupe to go with it... and you can bet I'll move so slow as to look like I"m not even going to buy!

I've always taken my sweet time with used car purchases... always will. I don't want to (as my mother used to say) "buy someone else's problems".