I was looking for a little more power and a throatier sound. I got both, the latter in excess. I had the dealer install V&H Staggered Big Shots. I am running VIEDs to richen up the mixture, but have not invested in a tuner yet. I wanted to see if the VIEDs would do the trick for $100.
The bike runs great. There is a minor pop here and there but it is infrequent. There is no hesitation that I can feel. I am sure it would run better with a tune, but cost/improvement factor may not be worth it. The bike pulls better between 2k and 4k. It also feels lighter.
The only drawback is the sound. The pipes are far louder than I wanted. I may try the quiet baffles after I put some time in with the stock V&H baffles. I wish I could have ordered the pipes with the quiet baffles standard. Startup is the worst and it barks quite a bit from a stop.
The pipes look great to as they are a constant diameter throughout their length. Overall I am happy, but my neighbors may not be when I go to work at 7:30 in the morning.