Many people bash the MarkIII for its "safety" features.
These include:
1. A lock.
2. magazine disconnect safety.
3 Loaded Chamber Indicator.
I find that as this isn't a self defense pistol I don't care if it has a lock or not.
The same is true for the disconnect safety, my life is NOT dependent on my MarkIII, so if that one in a trillion chance that the gun fails to fire(more likely the problem would be a bad primer...) it doesn't bother me to know that the Paper can live for another few seconds.
I actually kind of like the loaded chamber indicator. It does NOT present a safety issue as many will have you believe, the problem was only with some of the very, very early MarkIIIs and I don't think a problem ever actually occurred, you would have to work hard to find one of these older ones that hasn't been fixed.
I have the Competition Target model and really like the bull barrel, the little muzzle climb there is with a 22 is almost entirely negligible with the bull barrel.
And yes the stainless steel barrel does make a difference, it is stronger and, IMHO, looks much better than the blued version(then again i think that only revolvers should be blued
)