I will FINALLY be getting around to ordering my DA-50 in about two weeks. Since there are a lot of them out there I would like opinions on which muffler to get for it.

It is going into a GP patty wagstaff, and I won't be modifying it to accomodate cannisters. I guess the choice is between a Bisson and a Slimline pitts. So, does either of these perform better on the engine as far as allowing better output? Is one quieter than the other?