I just picked up my third 1100 last fall. Its a 12 ga. Upland Special NIB. I've had my first 1100 since I was 12 and have never experienced a failure to cycle using any type of load, high or low brass.
The first shotgun I ever shot was an 1100. It belonged to the instructor of my Hunter Safety course. The course ended with a session of trap and he let me use his since I had no shotgun. I was the only student to break all the targets and I've been a fan of the 1100 ever since.