Thanks.
I didn't make this clear in my initial post, but Lucky Gunner recommended getting a revolver, among other reasons, to improve trigger control, so that's one of my reasons for wanting a double-action revolver.
.357 and .38 SPL ammo has been REALLY hard to find until recently. Update: I just found Speer Gold Dot +P 135 grain for Snub Noses in stock and ordered three at $38.99 for a box of 20! (Massad Ayoob recommends and uses when carries a revolver, I believe a S&W 340PD). It seems expensive; is that a normal price for that ammo?
I also recently found and bought .38 SPL and .357 Magnum Hornady Critical Defense FTX JHPs.
My Crimson Trace Laser Grip is model LG-105, which uses a .028/.029 hex wrench, per Crimson Trace's personal communication (they didn't offer me a free one). I don't quite understand that size, so are there alternatives to the Crimson Trace hex wrench? If so, what does that .028/.029 correspond to, say in metric or Imperial measurements?
I've read from several sources that cops, esp. NYPD, prefer revolvers in ankle holsters as their back-up guns, so I'm confused.
Where do you carry your 3" Ruger?
About the Ruger SP101, I actually go to dry-fire it at the big box LGS a couple months back. I just HATED the trigger, and that's a first for me of all the guns I've ever fired or owned (heck, I can even tolerate Glock's triggers and double-actions on other revolvers I've tested are okay). The trigger pull on double action took forever for me.
Concerning the 3" .357 Magnum S&W revolvers recommended, should I get new or used? If used, what years and models would be good and those to avoid (I've heard mixed things about 1960s-1980s quality of S&Ws)?