Please note that not all models on their website are already available, here's a summary of models that are:
X1/PX1:
When I saw their first catalogue a year ago, I wondered why they had 1-cell Xenon lights in their lineup, and pretty large ones, too! IMHO, 1-cell lights should be as small as possible. Otherwise you could use 2 cells which would give you lots of advantages. However, while the X1/PX1 are large for 1-cell lights, they put out quite some light (much more than the Surefire E1E). The X1 and PX1 might be the brightest 1-cell Xenon lights currently available.
X2/PX2:
Very good classic 2 cell Xenon lights, better than the Surefire models in most areas. The PX2 comes with the belt clip, which I don't have use for, but security guards and LEOs seem to like it very much. The X2 is my favorite. It's a direct competitor to the Surefire M2, so I'll compare it to that light. Both lights are about the same size. The X2's beam is better, it's a little bit more focused than the P60/61 with a well defined bright hotspot and useful sidespill. The X2 features double O-rings on all openings (lens, bezel, tailcap) and the light I EDCed for a couple of months last year never leaked when submerged. One thing I don't like is the fact that the X2 uses a polycarbonat lens. It's not appropriate for a light of such high quality otherwise. The first thing you wanna do is ordering a replacement UCL lens from Chris at flashlightlens.com. The 29.3/2 mm. lens fits perfectly and gives the X2 the finishing touch.
On the picture you can see the non-reflective HA-III PentagonLight uses compared to Surefire HA-III on the M2.
S2 (19 LED):
The S2 uses 19 5mm LEDs. I've heard contradicting information regarding a regulation circuit. Now that the final product is available, the only information regarding the circuit can be found on the box of the light (nothing about it in the manual). It says something like "electronic circuit to protect the LEDs" which probably means a resistor. I'd say the light dims over time, my guess is there is no regulation. As for the body, this light is very similar to the X2 and the first thing you do should be replacing the cheap polycarbonat lens with an UCL worth of this otherwise top-quality light. By the way: most parts of the PentagonLight models are interchangeable, you can take the LED head of the S2 and put it on the X2, use the tailcap of the PX2 on the S2 etc. Back to the S2: the most important thing is the beam, and in case of the S2 it is a flood as you would expect. The 19 LEDs are underdriven, which increases efficiency and therefore runtime, but decreases light output. Due to the large number of LEDs, the S2 is still the brightest 5mm LED light I've handled so far. Think of a Lightwave 4000 with its 10 LEDs. The S2's beam is very similar but ~1.5 times brighter. If you're fixing a car engine or changing a tire at night, this light is perfect. It's also very good for moving fast indoors such as in dark staircases etc. Two more things are noteworthy about the S2: First, it's a light that I have never seen going out. Even with batteries that won't give the slightest sparkle in other LED lights, the S2 still manages to put out a little bit of light. Second, looking at the S2 from the wrong side is more annoying than you would expect from a light using 5mm LEDs. The 19-LED array is pretty hard on the eyes, so I guess one could say that the S2 has some tactical value in close combat.
X3:
The X3 is about the same size as the Surefire M3 and puts out just a little bit more light than the M3 standard bulb (LOLA). The X3's beam is more focused than the M3's beam and it can outthrow even the M3's HOLA bulb. Also, the X3's beam is noticeable whiter than the M3's. Just as the M3, the X3 is too big to be carried comfortably in pants pockets.
L2/L3 (1W/3W/5W Luxeon):
These lights are not available yet.
/ubbthreads/images/graemlins/smirk.gif I hope this little summary helped. BTW: If someone visited the PentagonLight booth at Shot, I would be very interested in a short summary about what they had on display. (Thanks!)