I had long TORs on my bike for two years, then Specialty Spares for five years, and now have short TORs for the last couple years. Granted there is a long lag time for comparison between the two, but I don't think my short TORs are any louder than the long ones were. Actually, I think the long ones may have been a little crisper sounding; I wonder if a lot of it depends on what version of TORs you get. At any rate, both TORs are much quieter than the SS were. With the TORs, I use earplugs on longer rides because of wind noise. With SS pipes, I used ear plugs even on short rides because of the engine noise.
Will