So, I have one of these in the Mod3 housing, and it's a pretty nice tube.
What I like about this tube is that the white phosphor version produced by Photonis is more blue and easier on the eyeballs. That means slightly better than the L3, and especially, Harris/ITT WP tubes when transitioning to darkness. Also, the eye fatigue seems to be reduced...
According to the folks evaluating these tubes, a 2000 FOM Intens tube compared to a 2000 FOM L3 tube will have about 9%-20% better sensitivity due to its extended Ir spectrum capibilites.
So you need to compare apples to apples... also, L3 seems to be exaggerating their tube data, interestingly, by about ~20%.
At the moment, I think the Intens tubes are a great deal.
Just my 2 cents.
Oh, and the highlight features are quite nice on the Intens tubes. I'd rather have an RC tube that was not MilSpec, but high end, except they don't make those. So the Intens is probably the best all around tube you can get at the moment. (...and I have L3 unflimed tubes, two other types of Photonis tubes, and some ITT tubes.)