I am quite happy with the Werkes® Slip-on, but it is a tad loud. So you might need to behave in town (-: I had the Triumph heat-shield ceramic coated, and there is a little OEM exhaust bracket on the left side, for which you need to remove the side-stand assy to get to. I was not pleased at all with the DNK tune, though - see
Performance Placebo. I will be trying Penner's next - it is receiving rave reviews here.