they are a great all around pipe, the 916 sound beyond wicked. good low end and all thru the range.
the bad is the 916 can be a pain to mount cause of the 2 into 1 silencer but they are bad ass,
and the mounting pad on the silencer can break, its a bad design but still the pipes are bad ass.
shearers are good mid to top pipe. not sure on what you plan to do riding wise.
dmc are a good pipe.