Mac, UPR....? others? For my 90 GT.....not lowered but they are having issues getting the alignment right so Im going to add the plates to give it more adjustability
+1 for MMmaximum motorsport or steeda, upr and mac use a two piece welded together bearing set which have in the past had issues but I think it depends on the purpose of the car. Plus allot of people run them without issues so in your case maybe cheaper might be better?
I personally have mm on one car and steeda on the other and are 100% happy with both but if I had to say one's better then the other i'd have to say it's mm's only because they seem to have a slight bite more adjustability to them I believe.