I have had mine for a couple of months. I also have a Jerry Miculek 627 V-Comp from the PC Shop from ~'01. It has a very light/smooth trigger - the 627 Pro had a 'nice' trigger as delivered. It's 'tuning' appears to be a shortened strain screw! It had a standard looking flat hammer spring. I polished the rebound slide, put in a bit weaker trigger return spring, replaced the strain screw with a new one, and installed a full power Wolff ribbed hammer spring. It's nice - and dependable - now. When my interim Winnie primers are gone - and I am back to Feds-only, I'll go to a reduced effort Wolff hammer leaf - although it aint bad now!
I oscillate between the Miculek monogrip, a la my 625JM, and the rounded non-f.g. Ahrends - the rubber Hogues joined their new siblings in a drawer. I do like a fiber optic sight - thus the HiViz - which, like with the 625JM, is easily changed in seconds due to the spring loaded front sight. It takes the same 'height' HiViz as the 625JM - so one set of spares would fit both.
Another common point between the 627 Pro and the 625JM. Both come moonclip ready, a fact of life for .45 ACP 25/625s. Both also have 'eased charge holes' - actually, eased ejector stars. This is good - rounded bullets hit that and slide right into the chambers. Also, the 'easing' is on the ejector star - a less expensive and easier to change component than a cylinder. Besides, the outside 'rim' of cylinder is all that's left after the 'moonclip conversion', it would seem to weaken the rim support if you truely eased the cylinder there. I wouldn't use the rimless .45 ACPs in a 625 without moonclips - but the eight long and wobbly 'legs' of moonclipped .357Ms for a 627 don't load anywhere as easily, much less as quickly, as the .45 ACPs in a 625... I generally don't use them with my 627s.
While the 625JM may have hard chromed forged hammer & trigger, the 627 Pro seems to have MIM parts - evidenced by the open and recessed back trigger - no problem at all here. The recessed muzzle crown is a nice touch. All in all, I rate my 627 Pro, at $720 + s/t several months back, as a best buy. As great as my JM PC627 V-Comp is, I'll likely have the 627 Pro long after the bigger one is gone. The 627 Pro is a great 'pointer' - and fine shooting revolver.
Stainz