Weblance the pics are nice. The Sp101 at the top is at the top of my list. Just a bit concerned about carrying. My Bodyguard .38 is easy to carry and draw, my Sr.40 not so much it's battling with my stomachs gravitational pull, I got a holster that works well and it's better, so I'm a little concerned.
I was intrigued by that Charter arms .40cal in one of the links above, th S&W's look a bit big and that hammer seems uncomfortable, may be nothing having the right holster won't solve. Weight wise any under 25oz and length overall 7' to 7.25'.
That Rhino seems kinda gimmicky with the barrel placement is that a proven design.