I'm rarely disappointed by Reso, Synkro, Marlow, Distance, L-ow & DFRNT but I wouldn't say I buy their stuff 'religiously'. I don't think I buy any records soley because its been made by a particular producer.
Mala, QUEST, Pangaea, Burial. However if any of these four did release an actual shit track then obviously I wouldn't buy it but I doubt I will ever come across a bad track by these 4 espesh Quest