First up is all lights on white, trying to match the ParNel 'white':
As seen, the ParNel easily beats everything. The two lights closest to 'white' are the Opti Tri and the Opti 30 RGB. The P56 LED is very, very blue and the DLED36 without the frost has a ton of color shadow issues as shown.
Next up is red, ParNel in R27:
The Opti Tri keeps up extremely well with the ParNel here, and the shades of red are all extremely close.
Next is blue, ParNel in R85:
As seen, the blues are even closer intensity wise. This is also the P56 LED's strongest color, besides green but I didn't do green comparison.
Next is Amber for Color shadows, R21 on the ParNel. Tried to match the LEDs as close as possible:
The Opti Tri and DLED36 came closest to matching the R21 of the ParNel. Color shadow wise, the DLED36 without frost is by far the worst. The Opti Tri has almost no color shadows. The only odd thing is about 8 inches or so away from the light is random specs of red, blue, and green. It is not a big deal since it is so low, past the 8 inches there are no color shadows.
Last up is all the lights in full on:
As seen, the Opti Tri and Opti 30 RGB are very similar in hue. The DLED36 is pinkish, red towards the edges without the frost. The P56 LED is again, very blue as in the first photo. For some reason, the blue LEDs over power the red and green.
All and all, I can safely say that a DLED108 or DLED36 Pro will match and go color for color with the 750w extended life ParNel, maybe even a standard life version (About 6-7000 more lumen then the extended life version). Cost wise, the LEDs still aren't the way to go. They are, however, now powerful enough to go up against halogens.