Got a CCC y-piece and Rainbow titanium can- the pipework went on pretty easily- just needed a bit of sealing with firegum. The stainless stell has remained nice and shiny and has gone a slightly gold colour, but has not corroded at all. The titanium can still looks shiny as well and has weathered well.
As for sound- it does have the road legal baffle in it- when you blip the throttle it is LOUD, but at constant revs it isnt too bad at all. From people who have heard it go past apparently it sounds very sweet and not offensive at all.
Performance wise- I noticed one hell of a difference when I took off the cat, I originally ran with the yellow cat code plug that was already in it, but then did the Steptoe mod- this improved it no end. Improved the acceleration and seemed to sound sweeter.
The can also seems to tuck in well and there is loads of clearance with the system panniers. There is a bit of blacking on the left hand indicator and there are some small heat marks on the back of the reg plate, but nothing that I would be worried about. That is even after a thrashing on the IOM
I paid £220 new for the whole system at the NEC last year and overall I have been very impressed and would definately recommend getting one- for half the price of a Remus it has to be worth it.