A buddy of mine got some Blazer fogs, so I took mine over and we compared them lit up. Overall, not hugely different. The Blazers were definitely a cleaner cutoff, but that's my fault for screwing the Fusion shields up a bit. I have TONS of color, though, also my fault. The Blazer output was more uniform throughout the beam. Brightness was about the same. I am seriously considering getting a set of the P1 Universal lights from ebay now just to compare.
I may change the overall plan to a different projector, but that remains to be seen right now. On another note, we are finally making some progress on the HID back-up lights. My buddy is trying to pre-wire pretty much everything so it's ready to go. Then when we install we just basically have to run the wiring.