Matt,
I'm not surprised at all by the PAR comparison. It was only a matter of time. With that said, I still am not completely sold, based on PFO's other PAR comparison "tricks"... I am also not convinced on the construction and design of the unit given the pricetag.
The G and H Series used lower output LEDS, that were not efficient or worth the money, but the I and AI units are starting to show useable application. Not that the G and H Series cant grow coral, but the same can be done using less electricity, better spectrum, and less expensively with Halides and or T5's.
The biggest downfall is their narrow spectrum and because of that I still dont see them as a complete replacement of Halide and T5... but do find them valuable as supplement (e.g. spotlights). IME using other blue LEDS and seeing the G/H in action the Blue LED's do make oranges and Greens really pop, but they lack the spectrum to bring that same pop to blues and purples.
With that said it's nice to see new technologies making their way into the hobby
