anyone have knowledge of ride difference between these. I'm looking at a 03 viper er (i'm getting old) or a 04 viper S (I think I'm still young) Performence wise is the "S" a lot better sled or will I never notice a difference? I don't ride alot and I'm coming off a vmax 600 trip-so both obviouly better. My current sled has rev. and elec start (along with 9500 miles) so I hate to give that up. but would for greater performence. thanks