Ruger SP 101.
Mine has an EXCEPTIONAL single action trigger--it breaks like glass, and is at a reasonable weight. My SP 101's SA trigger is much better than my GP 100s's, and just as good as my S&W 686 Plus in terms of feel (i.e. it breaks like glass, no unnecessary movement)--although it is heavier than the S&W. I think I got lucky on this one, because every other DA Ruger I own has some overtravel in the SA trigger, and a slight amount of takeup. If my GP 100's and Single action Ruger revolvers had the out-of-the-box SA trigger as my SP 101, I'd be thrilled.
Other great things about my SP 101 include good accuracy (I can hit beer cans as far as 18 yards with no problem), and good recoil control up to .38 spl +P loadings. I've tried full powered .357 magnum in this gun, and it kicks like a mule, but considering its a 25 ounce snubby one can't expect it to handle full powered ammo like a full sized medium frame Ruger GP 100 does.
Its definitely the best snubby I've ever shot. All things considered, I prefer medium size and large revolvers though. Recoil control and long range handgun accuracy (past 25 yard accuracy) are much easier to achieve with a full sized revolver sporting a 4-6" barrel, IMO.