I've thought about buying a G17. But I'm a size M guy, so a Glock 19 is like a "full size" gun to me, compared to guys with bigger hands. I don't feel like the 19 is holding me back from moving out of D class, to be honest. I'm more worried about getting A's faster. I know my gun will shoot a 1" square at 7 yards if I do my job.
I will say this year is the first year I'm tinkering with it. Especially since I learned how easy it is to detail strip a Glock, so taking the gun apart and putting it back together is fairly straightforward. So much so, that you start to think, well, what if I changed just this one part.... That's probably how I ended up buying OEM extended mag release, and a 4.5 lb striker spring, and an Overwatch Flat Face Trigger is on the way to me as well. My G19.5 was $425 using a GSSF coupon, and the bits and pieces are maybe $150 or so.
But it's fun and if I perceive some value in it, why not.
But spending mucho dollars on a gun over $1k, for me to shoot Production? That would be nuts.