If you're going to shoot it, buy a used 3rd generation. That first shot out of a new one is going to cost someone $300-500. Might as well let someone else take on that first trigger pull.
Like signing on the dotted line for a new car. As soon as you sign the contract, and its yours and the finance company's, the resale value is immediately 5% less than what you purchased it for. Dang New-In-The-Box guns, guns that have never been handled by you...at ALL...would be hard to sell for what you paid unless you got a heck of a deal.
I would exempt 1st gen Colt SAA's from that rule; I think if you care for it and shoot it sparingly, in 5 years you could still recover your money plus some, provided you didn't pay too much to begin with.
