Outside the the healing vendor wep augs, I didn't muck around with them much until after killing sleeper. The bosses in Veesheen peaks also drop augs, but I don't know if I got a single good one from there, but I just skip everything but the last boss. I still don't have augs in every slot. When farming Nardox, I think I got 1 lego, 4 or so blue, and 8 or so green, at around level 50, and been using those ever since.