IMO the Preon 2 is an entire league up confronted with the pn20a2... it's way brighter and, most of all, its beam is million times better... you can't seriously ask a penlight to be a thrower, and the Preon just floods better, with its bigger hotspot, its wider spill and its much smoother transition. plus, the 4sevens has got a "real" low mode and a medium more suitable for common penlight uses...
the Eagletac looks cooler (but it's subjective) and its UI is better, anyway.
PSSST... I think technology may have changed a little in the year and one week that this thread has been sleeping?
:welcome:
At this point in time, I am strongly regretting my purchase of a supposedly neutral Preon 2 a couple weeks ago... It isn't neutral at all. I'd say it's cool in fact, with a color temp of no lower than 5,500K. While hindsight is always 20/20, I wish I had gotten the PN20a2 instead, filter kit or no filter kit. The beam tint on the Preon 2 is one of the worst I've ever seen on any light, even for a cool tint.