My mate has the 06 SVX550, and the bikes living here while he's away overseas, and I'm swapping between my berg 04FS650. He got the thing de-restricted but was told by derestricting or making any modification the warranty was voided. He put the race exhaust system, which was so tight to fit it burnt through the injector line and made for a real interesting moment coming into a corner. You have to totally remove this exhaust to get to the heads. As for the ride he's came way too soft in the front and really hard in the rear. It will not tip naturally into a corner, nothing like my berg, I have fully adjustable front clamps but I never remember the old girl being like this, as you go int the corner and lean into it, it actaully works against you trying to pull you up straight. It does have power all the way through the range. Horrible to start, over here you are warned not to push the button longer than 3 seconds as it burns the starter motor out. I know of a guy who has already burnt out 3 starters. Doesn't start well at all when cold or been sitting still for a while, fine when it's hot. Horn factor well what more can I say it does turn heads, but give me the Berg any day. Oh it's way heavier too. Sorry to be the bearer of bad news, I too was looking at getting one but was really disappointed after riding it. My mate didn't get a chance for atest ride and bought it sight unseen as they would only order it in on placemant of an order. Definitely ride it first. I have heard a rumour that you may have to strip them down after 50hours or so, this part I can't confirm as he was trying to get confirmation on this before he left.