I haven't personally owned a .45 ACP handgun for about seven years now. However I have carried a Gen 4 Glock 21 at work for the last ten years. I am well stocked with G21 magazines, holsters, and other accessories.
Our agency is making the transition to 9mm Glocks within the next few months. This is an astounding feat for us and I am still shocked that it is happening. The rumor mill is that to personally purchase a department G21 will cost in the ballpark of $450. If you want your individual duty weapon there will be an additional charge pushing the price over $500. The hell with that...
My G21 is my first duty weapon and I always thought I would want to own it. But the Gen 4 platform just isn't that great. I hate the finger grooves and the slide stop design. But my G21 has been a super accurate and reliable workhorse.
The Gen 5 G30 seems way more attractive and practical. I am very excited to get my hands on one and try it out. Especially now that it would serve as a concealed carry piece instead of a duty gun. Probably will end up being cheaper in the end too.