I'm gonna have to eat a little crow here. After my Double Action Friendly I Ain't post, I went and bought a used Glock 21. Well, I say I bought it but actually TM was the one to talk the guy down to $350. TM then set me up with a new 3.5# trigger bar, grip plug, 13 round magazine (the original was only a 10), and a new slide stop as the old one was missing the vast majority of its finish. And I gotta say, I'm quite satisfied with the trigger. It's kinda like a soft two-stage trigger on a rifle with a really long first stage. And I hit with it just as well or better than with my Witness.
Think I'll keep it.
Also, TM let me know that CDNN is running a sale on G21 (non-SF frame) 13 round mags for $14.99 each. (In looking the link up, I noticed that they're now $16.99 and out of stock to boot! Gee, I wonder what brought that on? < /sarcasm >) They're marked "Law Enforcement Use Only" but they're perfectly legal for those of us in states that are still (relatively) free. I picked up two and a holster while I was at it.