The Exolion light engine will fit a Jil host (either DD or 1.3W), but you'll need the spacer ring ($5 from goldserve). Turn your DD or 1.3W into a Semi-Intelli. :laughing:
As for why I was not content with the stock Exolion LE, well, I was. I would have been perfectly happy with it. But goldserve had to come along and offer us U bins. Dirty trick. I suffer from the man disease that makes me have to have the best version available. Besides, such a fine Ti body really does deserve a U bin.
The U bin boards should be substantially brighter, as they are driven at 1000mA rather than 800mA. I don't have a light meter, but I'll be sure to take some comparison beamshot photos (real world ones, not just white walls). I expect the non-joker LED in a non-joker reflector will make quite a bit of difference as well. I kinda like the bright sidespill the mismatched stock LED gives, but the doughnut hole at close ranges kinda bugs me. If I want a flood, I'll buy a LDF lens (that reminds me...).
As for the interface, I would have been fine with the stock one too, but with the option available to me to customize my own, I couldn't resist that either. I like the simplicity of the Exolion; if the FLuPIC has a flaw, it's that there's almost
too much customization--so much that sometimes I'd accidentally be reprogramming my Jil when trying to use it normally. Considering the complexity of programming, I don't fault gregw at all for wanting to keep things simple. I originally thought of locking in the levels at low/high/burst, but since I don't know how the U bin will perform at any given levels, I kept some programmability. It'll still be low/high/burst, but with strobe added, as well as 1-20 adjustments for low/high.
With the Burst on the U bin board running at 1000mA, I expect I'll stick almost exclusively with the 2 lower levels, but will always have the Burst for S&Gs.