IMO there is no good answer to your question. The SP-101 is heavy, less expensive, with a lousy trigger (mine), than the SW's which are lighter, very expensive, with good triggers. (386PD, 386, 360, etc.)
I carry a SW M66, .357, with a 2 1/2" barrel. It is a 'K' frame and is out of production. I found my M66 at an online auction, NIB, for $400. I just replaced my carry, Taurus M85 UL with it. More fire power, just as easy to conceal, and I really don't notice the extra weight. Here's a pic.