OK, big debate time.[img]/ubbthreads/images/graemlins/rant.gif[/img] (at least in my own little world/mind[img]/ubbthreads/images/graemlins/banghead.gif[/img]) Which would put out more light,(lets say lumens) an overdriven 1 watt LS HD at say 700 Ma or an underdriven 3 Watt LS HD between 500 and 700 Ma? Lets say also a BIN of Q flux and K Vf for the 1 Watt and S flux with K Vf for the 3 Watt. The heat is obviously higher on the 1 Watt but lets say that's been considered and compensated. [img]/ubbthreads/images/graemlins/confused.gif[/img]