Sometime in the next 12-18 months I will be coming into a nice chunk of money, enough so that adding a supercharger to my SXT Plus is affordable. Had never intended on doing it, but why not. Is there a consensus as to which one is best? Am I limited to what the local place normally sells and installs, or would they probably be able to install whatever I purchase? Haven't looked into these before and know nothing about them. Thanks for any input.