I would think all 3 are somewhat unusual because the 3” barrels are less common. The Speed Six is gaining a cult like status. I don’t know if you could ever get the triggers to smooth out like a S&W. If you are used to the Smith triggers you may never be happy with any of them. I will never give up my Speed Six just because you can’t find them anymore. I’m in no hurry to sell my GP100 but would not lose sleep if I sold it. The 44sp would be a very interesting gun to me just because the 3” barrel in that caliber would be more desirable. Long story short get the 44sp and the Speed they will be the easiest to turn if you don’t like them. But the 3” 357 is no slouch I just have never heard anybody rave about the Wiley Clapp being special. I would be confused if it was my decision and would end up with all 3 if the price is right. As a collector trigger function doesn't keep me awake at night.