Power is not a problem as I build the lights myself. Running the xp-g3 at around 10mA seems to work fine. Never used Nichia but think I’ll order some. The Convoy S2 got a deeper reflector than S2+ so the beam is more focused. So S2 would be better than S2+ right?! And my S2 bought on fasttech got op reflector meaning the beam will be better I think, less rings and more even. Should be better right? I don’t got equipment for getting lumens so I’m only checking current. Was thinking around 10mA for pupil check and 40mA for ENT. Dunno if that helps? 
Edit: From what I could find Nichia219c work fine with 7135 drivers so I think I’m ordering a few of these.