Gang:
How good to see that everyone is still here, after my long hiatus of travel and fatigue.
I shoot my 19 in IDPA, even though I slicked up my 17 for IDPA as sort of a "Race Gun." The 19 is my issued sidearm, and it has Meprolight sights. The front sight is very crisp for a 3 dot night sight system, and is a tad boxier than the original Trijicons that came on it.
The 17 has the stock fixed sights, and works really well, unless you shoot a few thousand rounds in training through the 19 the week before an IDPA match, and then you realize that the 17 has a TOTALLY different sight picture and point of aim. (No laughing, SB!)
As far as recoil - I think that the difference in felt recoil is negligible.
I have just been shooting my duty gun (G-19), because I figure that the he most important part is getting more trigger time on the one that I carry daily, and will more likely use to repel evil, rather than worrying about winning in a fun match.
Beware of the man who shoots one gun - he might know how to use it!
And don't get me started on those 40's...