I bought my very first Glock from Koscielski's in Minneapolis late last month and picked it up this past weekend at a gun show in Saint Paul. First off, I really liked dealing with Koscielski's and would gladly do business with them again. The gun was great at the range, and I find the Glock platform very pleasurable to shoot. There's hardly any recoil using standard American Eagle 115grain FMJ factory loads, and it feeds reliably. I did have one issue where I had to push the slide forward maybe a millimeter or so in order to get it to go, but I assume this is part of the break in period for a new gun (this only happened the first two times when I had the slide locked open per the range rules, inserted a loaded magazine, and hit the slide release). The gun is also very accurate, and doesn't spew brass too far, although it goes in all sorts of different directions.
If I get an automatic in another caliber (save for .45ACP, for which I will probably get a 1911), it will be a Glock.