Hi,
Since my Nichia 9mm (3.5 W diode + 4 Amp Buck Type Driver + G-2 Focusing lens) in a copper heat sink (housed in a large aluminium flashlight) run out of order, I'd like to replace it with a MX900 with SXD Driver 4.5 Amp to peak 6 to 7 W, as you describe in the topic...