Benq 1620 ... my burner preference so far ... FYI:
( TYG02 w/B7V9 ): PIE / PIF's are lower (sometimes by 1/2) with WOPC off burning at 8x. Better on at 12x.
( YUDEN000 T02 w/B7V9 ): Better on at 8x. Haven't tested 12x.
( YUDEN000 T02 @ T03 w/B7V9 ): Better OFF at 8x. Haven't 12x.
( YUDEN000 T02 w/B7P9/B7T9/B7U9 ): They all don't seem to like turning if off at 8x.