I usually buy from local butchers. If you are willing to eat something other than steaks (eg liver, which is definitely much richer in vitamins), you should make sure to buy it as fresh as possible, and local butchers are probably the best option for freshness as they generally cut the meat on demand.
(or maybe I’m just generalizing from one example, please check the quality of your local butcher)
I usually buy from local butchers. If you are willing to eat something other than steaks (eg liver, which is definitely much richer in vitamins), you should make sure to buy it as fresh as possible, and local butchers are probably the best option for freshness as they generally cut the meat on demand.
(or maybe I’m just generalizing from one example, please check the quality of your local butcher)
From what I gather from Adam Ragusea, modern flash freezing actually does an excellent job of preserving quality.