The most reliable guns I've ever owned, I've had several of the 17, 19, 20, & 21 in different gens. Might get another Gen 4 20, but overall, I just can't get past the triggers.... got spoiled on 1911 and the HK match triggers.
I got motivated to go out a few weeks back, only went about 5 - 6 miles, legs were fine but my ass hurt like hell for 3 days (even with a good gel seat)