I have a bunch of Glocks and a few of them are 19's. The 19's are OK, but are actually my least favorite Glocks, and I prefer the 17's and 26's over them.
Nothing really wrong with the 19's, other than for me, I just find their grips a tad cramped and just really dont see their point. The 17s are just as easy to carry, and the differences between the 17 and 19 are basically negligible.
There is enough of a difference between the 26's and the 17's and 19's, and the 26 can be carried where the 19 cannot.
As was mentioned, 10K rounds is nothing and if for some strange reason something were to go, Glock will make it right, as long as you didnt do something stupid.
A little over a year ago, I sent my one 17 in due to a broken rail. Id been shooting the gun weekly, at least 300 rounds a week, and on many occasions, 500+ rounds a week, for over 10 years. When I sent the gun in, it had right under 150K on it, based just on the 300 rounds a week count.
Glock replaced the frame, which I had stippled a couple of times, and was told they would never fix anything due to it. They also rebuilt the rest of the gun with new parts. The only original parts on the gun now, are the slide and barrel.
Glock only has a one-year warranty, something I wasnt aware of until I was looking through the manual for something. When I called them about the rail, the gun was nine years out of warranty and the grip had been stippled multiple times. All they said was, send it in and we will look at it. Two weeks later, it was back, fixed, and right back at work. All it cost me was $25 to ship it down to them.
Im still shooting that gun on a weekly basis, and its heavily dry fired, every day. Those two weeks it was at Glock, were the only two weeks that gun wasnt shot since 2009.
If youre looking for mag, the Korean KCI mags are a great and cost-effective option. Ive been using the same lot of around 20 mags every week with the gun above. Never had a problem with them, and Id trust them for serious use. This applies to the 17 and 19 mags. The 33 rounders arent not as relaible, and I dont reccomend them. I have a bunch of factory 33 rounders as well, and they arent all that great either. If you want the larger capacity mags, go with the Magpul 27 round mags.
Magpul mags are also a good and reasonably priced option. Both the KCI and Magpuls will cost you about half what a factory Glock mag will cost you.
Just want to comment on the grip angle thing, since it always seems to come up. Yes, the Glocks grip angle is slightly different than the others, but in realty, they are all somewhat different from each other, and not really all that different.
If you shoot them all, and your brain has the learned reference ingrained, you can easily shoot any of them, interchangeably, put one down, pick one up, with little or no trouble what so ever. Might take a mag to readjust early on, but I dont even find that happening anymore.
I shoot most of the different types of handguns on a regular basis. SA, DA, DAO, auto, and revolver. While I do shoot a Glock weekly, Im usually shooing at least one or two of the others along with it on a random basis each week.
Most of my shooting at close range is done without sights, and with any of them, the rounds go where I was looking on the target when the shots break. "Pointing" is not an issue.
If there is an issue with the grip, its in your head.
Same goes for complaints about triggers.