Let's see. I've owned several dozen Super-X's, about as many 1100's, plenty of Beretta's and a few Benelli's. That said, the 1100's are easy to shoot but hard to keep in one piece. Before Timney started making real release triggers for them I always needed a spare or two whenever attending any major shoot. Never hurts to carry a spare link, gas system and an extra bolt. Last time I went to a major shoot (the last Eastern Zone in Hamilton Ontario around 1975),I thought two complete guns were enough-wrong. Didn't Leo trash one every year and start with a new one?
That said, my switch to a Super-X was long overdue. Very reliable, fabulous release triggers, excellent barrels (especially ones with high impacts-they came two ways). Drawbacks include a gas system that corroded easily,(that situation along with fragile bolt buffers has since been resolved),stocks that were often cast for a left hand shooter and a grip that made it nearly impossible for anyone with small hands to comfortably reach the trigger.
Berettas are very reliable but have crappy triggers. Gas system is reliable and easy to clean. Beretta never seems to get their stock act together. Worst adjustable comb hardware, abrupt grip and stocks that fit almost no-one. Barrels that are way too light for Trapshooting with a generally too flat impact.
Benelli's are probably one of the finest field guns available but shoot way too flat for any clay target sport. Ease of disassembly, total reliability but barrels that are way light. Not to be considered as a clay target gun.
So give me a Super-X anytime. The heart of any auto is the trigger and the SX-1 is the finest ever made. They also tend to function properly, have gorgeous wood and enough weight to feel like a real trapgun. Ask Pete McCall!!