For 3DL, I used to like SaintFox's lights (you can probably find them in the store here), its been a while so I can't really make a lot of good recommendations for 3DL. Except Khory. Find her lights elsewhere, I don't think she brokers here.

For Iray, try OOT (outoftouch), jCade and Khory (you might find some oot lights in the store here)