If you're intending on scoping this gun, go with the Hunter model as it comes with rings and mounting provisions. That way you won't need to drill/tap the topstrap. Ones I own that match what you've mentioned consist of a 45 Hunter, a 6 1/2" 41 BH that I scoped (drill/tap) and a 5 1/2" Bisley. I've yet to shoot the 45 Hunter but as far as comfortable hold, the Bisley is my preference. Were I to scope the Hunter I'd say that with heavy loads, it would be the nicest simply because of the weight.
Were I to reccommend one to you, I'd say go witha iron sighted shorter bbl Bisley. Balance is better and that diff. in bbl length isn't going to make any real differences. If you've already got the T/C for longer shots, the non-scoped Ruger will be easier packin' too. :wink: