I was in my favorite local gunshop when a gentleman came in to trade a stainless Colt M1991A1. The gun had Novak 3-dot tritium sights and was in very nice shape. The shop gave the guy $375 as a trade in; I offered the owner $400 for the gun and took it home with me.
I wasn't planning on a new carry gun, and I have at least another half-dozen 1911's, so I dropped the gun off at my gunsmith and asked for a combat accuracy job, trigger work, beavertail, extended thumb safety, and, for something different, the Ed Brown Bobtail mainspring housing.
Picked up the gun a week or so later and it's a sweet shooter; put a couple hundred rounds through it when I picked it up and didn't drop any rounds out of the 9-ring on a B27 at 25 yards shooting all those rounds. Most of the shots were 10-ring, with at least half in the X. Not too shabby for an old guy with bifocals.
Anyway, I've been carrying the gun for a week now, and the bobtail mod is the single best mod I've had on a 1911 for carry in 25+ years of carrying one. Nothing has ever made this much difference in my carry comfort and I've tried just about every combination of size, action, barrel length, etc., in those two and a half decades. I've always gone back to a full size 1911 with an S&A Mag well. But with the bobtail mod, the gun (a full size 1911) has become a more comfortable carry piece, and I had never noticed it was an issue. I'll probably be switching to wood grips (not a fan of rubber ones) but other than that, the gun will be my regular carry, replacing a 1911 built for me by Behlert Custom in 1986.
Total cost, with all the gunsmithing; $700.