I had the opportunity to pick between an '06 4-tech SC sportster(215 HP) for $6500 or an '04 4-tech Non-SC (155HP) sportster for $6300. After much research I found out all the problems with a supercharger (from dealers, boat mechanics, internet, etc.), which includes the faulty ceramic washers, the much more gas consumption, and the fact it uses high test gas only....to name a few. Since both my sons will be using the boat a lot (pedal to metal), I decided to go with the boat with less potential problems and headaches. I bought the '04 non SC.