If yu wanna compare the McLuxIII-PD vs the Aleph System ... here are some of the main differences:
- The Aleph system is modular and fully compatible with teh SF E-Series platform, meaning you can play light-LEGO and change configurations in a heartbeat ... whereas the PD is a stand-alone light
- The Aleph System uses so -called LEs (light engines" that can be swapped netween the heads to further enhance modularity and they allow for an upgrade of your light when the flow of time has "obsoleted" your current LEDs ... whereas the PD is a fixed combo
- the PD is sturdier and heavier
- the PD is technologically more advances as it offers 2 fully regulated levels of light whereas the Aleph's low is unregulated
- the PD is mechanically more advanced and has the perfect electrical path, sapphire window, ... as it is the successor to the Aleph Series
- the PD has a clip, the Aleph not (in standard configuration at least that is)
Generally speaking, the PD is a more advanced package but is much simpler to use ... you can swap in a Li-Ion or a CR123 and just use it, that's all ... whereas the Aleph System requires a good deal of thinking before you can order one or play LEGO ... as there are zillions of options including drivers, LEDs, dive currents, battery configurations, ... you name it.
The Aleph System offers zillions of choices but requires an experienced user, or one that is willing to invest some thought in his lights.
If you wanna know more about the Aleph System and the modularity it offers go to the McGizmo forum and check out the sticky threads ... where a, Aleph FAQ and modular parts thread is linked.
If you have any further question, don't hesitate to ask.
BTW ... performance-wise an ALeph2 / 1x123 / NG500 / 15ohms comes realitively close to the PD. The PD isn't a scorcher pocket rocket, it is a very reasonable tool. It will be quite brighter than a JIL 1.3 or a QIII though.
bernie