Howdy & Welcome!
The difference between the full system and slip ons, is minimal. With either one, you'll want to get a re-map. But the best thing about the slip ons, is all the weight that you'll drop off the bike!
Where in Co. are you from? I'll be on a ride up that way, end of sept.
P.S. One of our members is an FMF dealer, I'm sure he'll be able to give you a good deal, as well as some excellent advise. should you choose to go with FMF.
http://www.superduke.net/forum/viewtopi ... highlight= topendz in Canada is the dealer