The filtration system addresses specific operational needs. It is lightwieght and operates literally 'on the run.' The time factor is a consideration as is the cost. Inovas are fair lights, but have the individual quality control mentioned. I had one that died almost immediately while it's mate lasted nearly 3 months of daily, though brief use. Play with it in different situations and then upgrade. My greatest feat with a micro light involved changing out a fried starter motor on a remote road AT NIGHT. Crawling under a car is bad enough, trying to juggle tools, torch and the part a nightmare. I simply duct taped one photon to the starter, and a second onto my finger. Your U2 is a splendid knife for it's size. I have on stashed in my PSK tin.