Bought the car as a mixed use track and street car 2.5 years ago. Not sure if it is possible to get more speed per dollar while driving something that is totally OEM. Overall it is a highly capable track car wrapped in a package that is still fun to cruise around in on the street. Generally reliable with a few issues. Needed a new starter and had to re-flow the solder in the ABS module. If you don't mind the high cost of operation (brakes, gas, big tires) it is both rewarding to drive and tons of fun. Stock cooling and brakes are just barely enough for short sprints, extended track use will require work in those areas. The OEM seats are really dubious and fall back on the track.
This is my second Corvette and the Z06 compared to my 2000 Coupe is in a totally different league. The Coupe was a blast and I enjoyed it to no end. It is rare living in a major city and looking forward to drive 4 wheels, but the Vettes will do that for you. My Z06 is somewhat a garage queen, but it is hard to stay away from her. This car is such a blast to drive and own I have a hard time deciding whether my Victory Kingpin or the Z06 is going to get my time. C5 Z06s can be had for as little as 19K or as high as 30K, depending upon mileage and condition. I paid 27K for mine, 8 months ago with 20K miles, GT1 wheels (4K), Corsa CatBack exhaust, and Vararam CAI, in flawless condition.
Found my baby with only 3400 miles and in Torch Red $38,000 U.S. greenbacks later and out the door I went. This car is just flat out the quickest, fastest, most beautiful car I have ever owned. As always beauty is in the eye of the beholder and that is just fine by me and the Corvette critics are always going to be around and that's OK too. Bang for buck there are no cars that even come close to delivering the goods the way a Z06 can. Just a big ear to ear smile every time. Sure there is some road noise, interior could be a little more plush or fancy, but this car is so damn rewarding to drive that any small dislikes are dismissed with any seat time. That is why I have one in my garage
I am extremely fortunate in that my first Corvette was a new Z06. The car has met and exceeded ALL my expectations in overall performance and driving enjoyment, but you must be prepared to drive, and pay attention to your driving at all times. This is not a vehicle to drive while talking on the cell phone, putting makeup on, or, heaven forbid, reading while cruising in the right lane. Buy this car if you love to drive.
Having never owned a corvette before, I expected all of the stereotypes to be true, such as a cramped interior, lousy build quality and so forth. None of these having proven to be true. The performance is truly exceptional, it is easy to drive long distances, and nothing has broken or begun to rattle, even with trips to the drag strip and a few road courses. In fact, I frequently choose this over my mercedes sl to drive to work, which surprised even me.