Re: Not worth it yep. Words cannot express how high the Diablo is over the Viper. I feel ashamed and frightened to even mention the 2 cars in the same sentence as I might get assassinated by an Italian spy. I took a vacation to Maui and I rented a 97 Viper. It was $400 per day. I asked them where the Diablos were and they said that Lamborghini cut them off cuz they abused warranties too much. They also said that they rented Diablos out (when they had them) for $1100 a day. I drove the Viper, yes it was PHaT. It was scary, it was badass, it was fast, it was an eye catcher. I don't even know what model it was I just went and rented one to say that I drove one. I also received a speeding ticket in the Viper while I was there. My biggest complaint was that the Interior sucked bad. For the money, I would purchase a Lotus Esprit instead of a Viper (they cost about the same brand new). I love the Esprit interior check it at http://www.lotuscars.com/current%20models/details/interior.html. Any fool knows that the Diablo is way better than the Viper. The Diablo is 90 HP per Liter, the Viper is 60 HP per Liter.