.45 suggestions.

Probably going to be getting my new .45 soon (antis please stay out of this, it is OT) and want some suggestions/advice.
Renewing my carry lic, I have never had a "civilian" lic before, I had a commercial lic. I'm sure it is very different.
I know I can't carry where they sell open alcohol, state/govt property and some other places. That will be different, but not much.

I am looking at the Glock Slimline .45 or this one. If I remember correctly it is the Glock 6.
I really hate the weapons with the thick handles.


What is the difference between the APC round and the straight .45, which is what I always carried?

I liked that I could get my target ammo at Wal-Mart.