I have purchased two boxes of mixed size/type of zerk from the local NAPA store. One box - SAE, the other - metric. Between the tractor, FEL & implements - all have their use/place. Brand - who knows - they are whatever NAPA chooses to carry. Over the long haul - I don't think brand is that important. In some applications/locations the zerk simply tends to get plugged more often.
I've found that these boxes of mixed size/type will have, at best, about 50% that you can use - 50% that will work nowhere.
If you have the time - take one zerk of each size/type back to your dealer and purchase only those that will work.