Exhust like most customerzation is a personal deicsion however if you are interested in Rhinehart or andything from National Cycle, PM me and I can price for you. Great pricing 10% discount for forum members and free shipping on all orders of $100.00
To me, it depends on the overall direction of the bike. If going for an ol school look its hard to beat Samson fishtail duals. For a more up to date look the VH BSS or Long Shots look good on a Heritage.