In years past, EB would let a request for quote out to the various string makers, and they'd go with the best deal, so they could be inconsistent, depending on your ears. If this is the current state of affairs, I have no clue. Look around at all the brands that don't have their own winding shop/equipment, there's lots are buying them from a third party, and some certainly demand a higher spec and QC than others.
I prefer buying strings from the folks that made them, so I'm a long time GHS and D'Ad guy, depending what I'm after.
I've played long enough to utterly prove the adage, 'Take really good care of your strings, and they'll die anyway'.
In that time, I've tried everything from those uber expensive Austrian confections all the way to those drugstore strings, and they all go away faster than I'd like. My go-to's are nickel roundwounds, so I get GHS Bassics, Balanced Nickels, the occasional Boomer, or D'Ad XL's or the Fender nickels. These are usually among the cheaper strings which allows me to change them more often than buying 'better' (more expensive) strings that go South just as fast. That's the only real way I've found to keep reasonably fresh strings. I've rubbed them down after a night, boiled them, soaked them in any number of preservatives, you name it . . . . and it didn't make a damn bit of difference. Coated strings, cryogenically treated strings, all that does as much good as if I rubbed them down with a garlic clove and olive oil ( . . . . might actually work . . . . ).
Strings that Go Dead 2 Fast are an unfortunate fact of life. It's not just sweaty hands, the winds move around or deform, how old were they when you bought them, how were they packed, did they endure a salt water ocean voyage from the Far East or the EU, on and on. They just go.