Nice 550 you got there. Have you considered a MAC 4-into-1? There are three different versions still available for the 550 (all black, black/chrome, all chrome) from bike bandit, dennis kirk, et al. When my original Honda pipes started falling apart, I put a MAC black/chrome on that I found used on eBay. The quality is fine, although I personally like the original 4-into-4 pipes much better and miss them, but oh well....
BTW, is that your MINI in the background?