91+ I'd go Corvette. 84-90 I'd go Camaro...The earlier C4's don't do much for me in the styling department and performance through the 80's wasn't dramatically better than the Camaro (although, admittedly it was better). In 91 (I think) when they face lifted the C4 it became a lot more appealing to me, and by that point all the major drawbacks had been sorted.
Usage is a factor too...by F-bodies have all been daily drivers, my Corvette's (two C3's and one 92) were not. The f-body is more comfortable and way more practical for the daily grind.