When the donut hole issue first came up, I pulled out my U2 to see what it was all about. I wondered if I had been missing something. No, mine does have a barely perceptible hole in the center of the hotspot. If I shine my light in a dark room at the white wall, I can just see a faint area.
Luck of the draw I guess. But why?
Is the donut hole caused by something in the LED die itself or by the physical mounting of the LED in relation to the hole in the reflector?
Whatever the cause, why should there be this much variation. I realize that like tint, this hole will bother some people way more than others.
It seems to me (and I'll bet to many others), that there should be more consistency in a light in this price range and from this manufacturer.
While my U2 is nearly perfect in beam quality and tint, the "white" LEDs in my A2 are so blue it's distracting.
I am not overly fussy, but I guess I just have higher expectations when buying top of the line. I think that is perfectly reasonable.
Mark