You didn't specify that the drop-in had to be an LED - if you're including incan, the LF HO-9 will give you 320 lumens from a pair of RCR123s, and their EO-9 produces 380 lumens from a pair of LiMNs. See them here: http://www.lumensfactory.com/products.php?cat_id=2&sub_cat_id=3