I have them also and I got them for the look mostly, because to me they are the best looking set of pipes you can have on the 1800 IMHO. I wound up putting the V&H quite baffels in them which gave it a much deeper sound and reduced the decel popping. I did notice a decrease in low-end power when I first put them on but the V&H quites brought it back to life with more back pressure. I have heard several people complain about the quality, but I haven't seen any signs of problems yet.
I saw them and heard them when I went to pick up my bike at the dealership 2 weeks ago in PA. They look nice and sound wonderful but I think I am still leaning more towards the V&H's. The VH have a deeper growl that I am looking for.
This weekend I went to a Honda dealership in I think Totowa, NJ and they had a mess of new 1800's with the 240 kits on them. They looked hot. They also had the BUB exhausts on which looked great. Only thing is I never heard them LIVE just in clips so I don't know what they reallllllly sound like.