This seems to confront me often as I'm fond of the OMM, OMS, OP, Trooper, Python, etc ... They all interchange stocks ... FWW, I've come to find that I prefer the new Python stocks to any of the earlier ones. I like the feel and the look, they don't block the cylinder and work right or left handed - for me, anyway. These also have a small palm-swell and finger grooves. The earlier target stocks like to jam up cylinder-ejection and just squirm a lot with magnums. I find nothing about the cut-down ones that I like, but they do give you cylinder clearance. I also like the Pachmayrs and Hogues but just don't like the way they look. I stumbled on these Python replacement stocks at a pawn shop and really like them alot. Actually, for my best shooting, the skinny service stocks work the best but they're not very confortable for magnums, either. Those OMM's were/are terrific revolvers and will shoot well with anything I've ever tried on them. I should mention, too,that there must have been some hand-fitting on all of the larger, target stocks as I'd swear they all feel different!
May-be-so? Even the skinny, service jobs have their own personality. I've even grown to enjoy the plastic Colt Wood jobs! When the Trooper Mark III's came out, I sure wasted a lot of breath bad-mouthing them and how cheap they looked, blah, blah, blah ... Now, I like them, too! They do a nice job of lining up the gun in your grip - very consistantly, which is what they're supposed to do. Good guns - those Colt revolvers!