While beauty lies in the eyes of the beholder...so does "Best Revolver"...but Function always trumps Beauty (3 wks left don't forget to vote!). Ease of day-long carry, maintain-ability...sure they're important but first and foremost: accuracy. If your blued-steel beauty won't keep a cylinderful under a silver dollar at 75 feet, it won't be my pick for favorite. And if I can't lug it off and on the tractor, climb aboard a 17' canoe nor 16-hand horse, or take my pick-up down to TSP for a pound of shear bolts, or cover it up with an X-Long T-shirt, it won't qualify for my favorite, let alone the "best revolver". And last, but certainly not least, it's got to be a caliber that'll do the job, any job on a working farm.
In my neck of the Kentucky Blue Grass, that boils down to any one of the following any one of the following for me: a 4" bbl'd M66 or 19, or a Smith M69. This latter is a fine, medium weight revolver well designed for everyday use...and yeah...I could do without the cursed IL, odd looking two-piece bbl., and fugly rubber stocks...but all that notwithstanding, mine's as accurate with both jacketed and cast SWC's as I can possibly hold off a rest...sub-2" for a good hold at 25 yds.
Your mileage probably varies, but one of those three will do nicely, here 'bouts. Rod