The beef here is good. You just have to know what cuts to get and how to marinate it or dress it. I buy tenderloin all the time...cant go wrong with that and as for burgers here I have yet to find a "funny" taste. Perhaps it is in how the burger is being cooked or has it sat around in the fridge for too long or not? I would be worried about the "or not" part.
Cornfed beef is fat...that is what gives it that lovely taste and as your arteries are clogging up and you are getting ready for that next bypass? All of your good angus cattle are grass raised just like here then they are shipped off to a feedlot and for those of you who have never been near one I shall save the olfactory description. Feedlots are an abomination.
As to USDA quality? There are not enough inspectors in the United States to ensure that processed meats are safe which is why I never buy "hamburger" from a big box store. I go to a butcher, get a good steak cut, grind it up, add some pork fat and voila! Best damned burger and I won't die from E-coli.
JMHO....beef....I love it. The beef here is decent.