Leo Vince if decent, Italian made, not excessively loud and looks great too. Best of all, its priced reasonably cheaper than other good exhausts. Mine was an open box (but unused) that I picked up for $220
Currently - 2013 Ducati Multistrada GT (for sale)
, '09 Daytona (track only)
Previously - '13 F800GS, '13 MV F3, '10 S1000RR, '04 Royal Enfield 500, '97 Yamaha RX135, '90 Yamaha RD350...and many more.