What bike are you wanting to put it on,there are many suggestions,but you need to give us some idea!I own and XC with a 2-1 Rusty Jones Flame thrower pipe onboard,but it's loud,it's obnoxious,and I like it :-)
I run a RPW Thor 2 into 1 on my Highball , great note and helps with performance . Nice deep rumble while cruising ,crisp bark when hard on the throttle . Lloyds also do a good 2 into 1 , and I think supertrap now do one for Victorys . With a V-twin you cannot go past a 2 into 1 . Short pipes rob HP . Cheers
Steve not sure how long you have been a twin owner mate,,the biggest disadvantage is the popping/backfiring on decel with our bikes,it is part of owning one,and have found you either like it or loathe it,but the one thing it is,is hard to get rid of,especially with an after market loudish pipe.
possibly the best thing would be stay with a baffled pipe and not much sound,that way you stay legal and away from the law,as I said before,I had Buell's prior with after market pipes,once again loud and obnoxious,maybe look as bassini pipes or some one like stain tune,they may make a pipe if enough people want them,they will some times give you a free set if your bike is the test bike for the design as well.
Dennis Foran on the Central coast does custom pipes as well,he did my Buell pipe for me,not cheap but bloody high quality work all round,and he builds them in Stainless
I have the rpw thor on my vegas.
I have been thinking of going back to std as its a bit loud for my liking
I would let it go for 500