I have the Terralux upgrade on my old incan Strion and it makes it a whole new beast. It's a TIR lens rated at 200 lumens but my 200 lumen Surefire LX2 beats it in terms of overall output. They seem to throw about the same. The tint is a little green, but not bad. Having already owned an incan Strion since they came out, this was a great upgrade, but the LED Strion has better tint, three modes (if that matters to you), and I hear they are going to be coming out with a 250 lumen version soon. On top of it all, buying a stock Strion will simplify any warranty issues if you have a problem.