Depends, do you care about patterning, cost, or lack of deformities the most?
Most of the smaller breeders focus on patterning with smaller deformities but overall good genes, can be expensive but they look insanely cool.
Larger breeders usually have the most deformities, and aren't the best for breeding, but they're cheap.
Wild caught/F1 clowns will have the least deformities but likely won't be designer and WC are a pain to QT.
It should be noted that these are just generalizations.