i ran straight fishtails on my 98 flhr for years. they performed well. i had also split them into true duals which also enhanced the sound. good power and a real crisp sound. the only other ones i run are a lot like a few of the others that have posted. i removed the baffles from my stock pipes and added the harley fishtails which have their own baffling in them. they look awesome and perform real well. not as loud as the others. gotta watch 'em though, they will tear your knees up(i'm currently sporting a bandage!!!) hope this helps some.