Don't need the power. My 15 has 460hp new one has 495. Of course the z06 will resell for allot more but too much $$$$$$ for me. I'm gifting my 15 to my daughter so no trade or sale on that one to reduce the cost of the 23.
If you do not have it by now, it ain't gonna happen. Back when I was a kid my dream was to have a Corvette (2), Hot Rod (1), Motorcycle (10). Back in 1990 I had all three (one each) parked in the playroom, plus 4 dirt bikes.