I have a Summit and have used it for several years. It is my only press and have had no problems with RCBS, Lee and Hornady dies. I got it because it sits flat on my bench with a wide opening to place the cases. Calibers I load: 9mm, 380, 38sp, 357, 45ACP, 45 LC, 454, 460 SW, 12.7 X 42.