So, "quality bearings." One can assume Timken. I've used heavy duty roller and taper bearings made by Timken, SKF, and National. Can't seem to notice any difference, but these are slow turning devices, although under heavy load. Find that proper lubrication is the key with them (some pumpers actually understand that. Just love getting a wrist pin in that has caked old grease with just a bit of fresh as though that was going to fix it.)
However, for wheel bearings, I see also BCA, Centric, FAG and Mevotech brands. Plus whatever 'store' brands one might find locally. Has anyone have experience with these other brands?