I have a couple Micro 9s. Both have been very reliable with Sig V-crown 124 gr hollow points as well as 115 gr XTPs.
The Micro comp version was attractive for both the .3” longer barrel, the threaded barrel, the included tritium night sights, and the grips, with a decent finger extension.
However I did find the comp made it a little more shootable in terms of faster recovery. I’m not a big fan of a compensator on a self defense pistol you might at some point shoot from a close in retention position, but it has more appeal than I expected. Between the grips and the comp, it’s much more p,ess ant to shoot than the standard model.