I'd like to stay in the 1k-1.3k-ish max end for something that tops out at about 14-16x. I'd be alright with a fixed 10x mil dot. I know that opens up the field a bit among what I would consider the mid-range for optics, and rules out quite a few higher tier brands. But I had to spring for a new stock, and don't feel like getting cut by the 'Rican--er, wife.
The IOR I mentioned, or a lessor magnification, may be up your alley. The Viper PSTs seem to have a really good rep, as well.
The 1100 action is beloved by many, but I've had better luck with other semiauto shotguns. Mine tends to be temperamental WRT to ammo, and FTE's. My Mossberg 930SPX was cheaper, but rocks. I've had great experiences using others' FN SLP, too.
Funny, they're selling a 930SPX for a decent price, too. ($630). Less rounds than the Benelli, interestingly enough.
Fast? How's this for fast?
Not a valid example. Jerry closes his eyes and shoots and still breaks records. (can't find a good YT link).