I can only speak about supercharged Rockets.
I have one of the earliest versions, prior to Richard (of TTS fame) making the new front engine casings, which improve the aesthetics considerably.
I bought mine 18 months ago and it was Richard's R&D bike and as such probably had a hard time at Richard's hands and has not had it easy from me. He repeatedly dynoed and dragged it, as have I. The bike is an 05 and had about 4000 miles on it when I bought it. It has since covered another 6000 miles of mostly abusive use. It has been crashed twice and the engine / SC has not let me down apart from a minor leak from the SC traction fluid cooler caused by one of the crashes.
With ToRs and CAT delete it was producing 266 BHP (Dynojet figures) when I bought it. I have since fitted Predators and retuned accordingly and it now kicks out 293 BHP and 227 ft / lbs.
It is more fun than a box of frogs. Properly tuned (a must) it delivers un - fkn - beleivable power from tick over to jeeezzusss chriiisssttt. It is smoother at very low revs than my previous standard Rocket but is faster than almost anything else whn you fancy playing silly buggers.
Beefing up the clutch is a must as well. I would highly recommend a lock up clutch from Nev (Neville Lush Racing in Australia). Properly set up these will happilydeal reliably with anything you can throw at them. The rest of the drive train is no more prone to failure than a standard Rocket.
It's not essential, but advisable, to upgrade the brakes and suspension if you haven't already. I have Progressive springs and heavier oil up front and Proggressive 440s on the rear with six pot callipers and quality stainless braided lines all round.
I ride mine arround town, and on motorways, but mostly fkn about playing tick with race reps and surprising the fk out of them on the A and B roads, at which it excels. It's enormous fun to chase a big sports bike and see them tuck in and gun it away from a bend only to be mystified as the fat fkr on a two wheeled bus flies past them sitting very comfortably and giggling like a twelve year old girl.
In short, buy one, they're fkn great.
The only downside is you have to carry a cloth with you so whenever you get back on it after a stop you can wipe the drool that all the admiring crowds have left on it. :wink: :lol: :lol: :lol: