Well, here we go again. First off, you keep coming up with good questions.
How well does the C6 perform? There are faster cars on the road, but 400+ hp sitting in a 3200 lb vehicle is nothing to sneeze at. 007, or James, as I call my car, is very quick, nimble and faster than I care to drive (well not really, I would like to drive mine faster, but not on public streets). My avatar is a picture of us (James and I) on the track at the NCM (National Corvette Museum).
Is it Comfortable? Let's just say this... We have done several trips in James (and my 1994 and 2001) where we were in the car for 8 to 11 hours a day. One particular trip where we had been driving for 11 hours and stopped for fuel, A lady said to my wife, "I don't see how you could possibly ride in that car." My wifes' response was "Once you get into it, it's like sitting in my La-Z-Boy at home." We typically will do 6+ hours in James, as that is the distance from our house to our daughter's house in KC. The C6 is a great road car.
As I told you in the other thread, SAVE your money and purchase one when you can. Make certain that you keep your driving record clean, as the cost of buying the C6 might be insignificant compared to the insurance rates if you have a bad driving record. Corvettes are classified as "sports cars" and insurance companies know that and assume you will drive it as such. BE RESPONSIBLE!