Buy an M1. Or an M2. Or an M3. Or, if you have the money, an M4. Or a Nova/Supernova, if you're into pumps (or just strapped for cash).
Why? Because Benellis kick ass, that's why. Plain and simple.
The only modern/contemporary autoloading shotgun I will ever buy is a Benelli. (The only other being a Browning A-5, which isn't exactly "contemporary" these days)
Cleaner, simpler, and as long as you aren't a pussy (especially light loads) and don't pile unecessary tacticool bullshit on it, it'll run like nothing else. And on the subject of light loads - the only failures of Benellis I've ever personally witnessed involved SBEs or SBE2s - both of which have 3-1/2" chambers - with 1oz or lighter target loads. I have not experienced any failures with my Montefeltro - 3" chamber - with any of the light 1oz target loads I've used for years. It's the higher "magnum" models with 3-1/2" chambers which don't tolerate light loads as well - they are equipped to deal with a much heavier load, of course, and so it makes sense that they sort of "expect it".