I like replicas, especially Old West replicas. I like the Schofield No.3 in particular, but I admit it's mostly for its historical style, as I can't say it operates better than anything else. The Colts are nice that way too. Most (if not all) of the Old West replicas shoot only .177 however, and so the "low power" aspect mentioned by several people above seems to be the norm.
I keep hoping to find ways to do some of the following things (while of course remaining within the law in my own locale), but have not tried any such tunings or mods yet: (1) Replace a 7.5" barrel with a somewhat longer barrel, to try to achieve just a little more fps (if that's even possible); and (2) Consider substituting in a rifled barrel instead of a smooth bore, although I don't know what it would really buy me within 15 or 20 yards; and (3) Perhaps see about converting a .177 replica pellet revolver to a .22, which I have heard of other folks doing, but I don't know how one would go about it, or who to ask. Maybe there are tinkerers who hire out to do such mods. My goal might be to get just a little more realistic feel--perhaps a little more distance while still being able to put a dent in a tin can. (Nothing dangerous or illegal of course.)
Somehow I'm drawn to the Old West "real" look and feel. It's nothing more than a hobby after all, so aesthetics matter as much as anything else. (My PCP rifle I chose in part because it resembles a "real" rifle more than it does a laser tag toy. Of course it performs very well too, but then it's a rifle so it's going to have a little inherent practicality to it.) It's not that I'm afraid of "real" revolvers, as I could easily find a 22LR somewhere, it's more that restrictions get worse and more draconian by the year, and with them the opportunities to launch a few projectiles now and then...making air revolvers that much easier to enjoy by comparison.