I farmed all 3 sets from Brayflox. I actually completed the Infantry set entirely on Greed rolls -- it was the first one I completed. The Battlemage's set was the last one, due to a drought on Battlemage's Crakows, and when they dropped the first time someone else won the roll. Took me about a week of farming, and I leveled 6 classes from 32 to 35 (one to 38) in the course of farming. Note that this was back in 2.0, before the exp boost.