"...some cheap ammo will pattern like shit."

This for certain.

But there's no magic out there that is all wonderful for all things. Like anything else, buy it and try it. Don't just trust that it will be good. I've had guns that didn't care for the flight control stuff at all.

Shotguns can fussy critters when it comes to gun/choke/load combinations. Be is birdshot, buck or slugs. What one gun.. or even most guns love, yours might hate.