almost all naman is a good feeds. it is a matter of whether it is compatible with your breed.
In general, you could be certain that the high end feeds is a good quality (ACE feeds, B-meg, CJ, Cargill, Farmers edge, Pigrolac, Uno etc.) the question is whether it is compatible with your breed.
I can attest for ACE feeds and UNO feeds, i used to work for them and they have a good quality feeds.