I have both a c5Z and a 986 box. I wouldn't trade one for the other. Granted I do drive the Z as a daily driver. Performance is off the charts in all categories and comfort level is high considering such a performance beast...we're not talking Lexus floaty but civilized when you want it to be. Also, I currently get 25-26 mpg with a mix a city and hwy driving. Power is only as deep as your pockets....right out of the box the z's dyno ~350whp with an occasional factory freak. Adding power is of no issue. With long tube headers, mild cam, intake, and a tune you can expect to put down 425whp/410tq. With drags this translates into a 10 sec. car. It's been documented. All this can be had for $3k. With those #'s we're talking C6Z06 territory!! Anyhow, good luck with your purchase. You won't regret it! If you want to verify any information you can check out
www.corvetteforum.com