I have a 6.5" 41 BH, and a 5.5" SBH. I've also had a couple of 7.5" SBH's in the past but ended up selling them. Not only was the barrel length cumbersome, the grip is larger on the 7.5" compared to the 5.5 and i never could get comfortable with it. To me the 6.5" is still a little bit on the long side sitting in a stand, so i wear mine crossdraw at a more horizontal angle (Galco Single Action Outdoorsman is a great holster) I certainly don't see any accuracy loss with the shorter barrels. The .41 is great, and I love shooting it, but your ammo choices will be fewer, and slightly more expensive....not alot on dealer shelves but readily available at gunshows, best to order it.
the 5.5 SBH is one sweet revolver though....balance is great