Colors aside, 1999 GTS, 2006 coupe. If you prefer convertables, 1999 RT10, 2006 convertible. Why the 2006? Because DC had three prior years under its belt with the model and corrected some of the prior year issues. You will also have plenty of the initial warranty left. When you are deciding, keep in mind the issue of replacement parts - availability and/or cost. For instance, the door hinges ( at least the driver's side ) and the door insulation on the Gen II's, assuming you actually use the car, will periodically need replacement. If you get a Gen II, you also will want to check the rear exhauster vents on the sides of the trunk under the liner. The rubber panes deteriorate over time causing some fumes to enter the vehicle. These vents are relatively inexpensive and easy to replace - particularly if you remove the rear fascia. There are a number of vendors who advertise on this site that carry quality parts - new or used. Good luck. Once you get a Viper, start slowly and learn the behavior of the car before you drive assertively.