I'm relatively new to revolvers, so these will be the observations of a visitor to the revolver forums.
Triggers - I'm not sure it's reasonable to invoke single action triggers in the context of double action revolvers. Like many noobs, I read what I can when I'm getting into something new. In my case, I stumbled across Grant Cunningham early on. I gather the guy has some degree of respect in the universe of revolvers and he advocates DAO conversions in the case of defensive firearms.
Double action revolver triggers will always suck if one is accustomed to tuned 1911-ish SAO triggers. The degree of suckage may vary. I gather Pythons have low suckage but the best of my two will never be confused with a Dawson-tuned STI.
Reliability - as pointed out in the linked thread, semis may gag more but a malf in a semi can usually be cleared quickly whereas a similar occurance in a revolver is often a show-stopper. My semis have been more reliable than my few wheel guns but nearly all the revolvers were bought used while nearly none of the semis were pre-owned - that's bound to skew my personal numbers but, as it is, the revolver has no reliability advantage for me. The semis I've graduated to "carry status" have each run 100%. Anything less is relegated to range duty.
Chasing brass - clean win to the revolvers. In fact, I only reload revolver rounds. OTOH, I only need to reload revolver rounds. Even premium .40S&W rounds are considerably less than what the cheapest .41 mag goes for. I wouldn't save much reloading rounds for my semis but I save enough reloading for revolvers to justify the reloading gear. These equations might change should I shoot more 38 special but that's unlikely.
Aesthetics - I give this to revolvers but my personal taste in semis runs to "plain", bordering on visually offensive. They run but I seldom post pics - for all the best reasons. Pythons, 686s, Anacondas, 57s are just easy on the eyes. Single actions that Turnbull has gotten his mitts on can be especially nice.
Cost - revolvers again. I have two Pythons that together cost a bit less than my STI. Granted, they are the 6", blued pedestrian variety but really, really nice revolvers can be had for less than high-end semis. In order to match cost with a mid-upper Nighthawk, a revolver fan would have to invoke a Korth or full custom widgit of some type.
I rather like the single action triggers on my revolvers but I would suggest the following experiment: wait till this thread scrolls off the page than start one proclaiming that you'll be shooting all your DAs in single action. Ever hear of a "gun snob"?. I'm beginning to think there's such a thing as "double action snobs" but I'm not certain - such a thread should flush them out if they exist. If only DA "counts" I'd propose that comparisons between revolver and semi single action triggers be abandoned. There's scant point in having a 3 pound crisp trigger if you can't use it when you need it.
Revolvers and semis are different enough I really couldn't see abandoning one entirely for the other. To each their own, though.
