A dissenting point of view.......
I have owned reflex (II)s, aimpoints, acogs, tascos, suits, and almost everything else man has made (no eo-tech yet though). For general type stuff, or if people are trying my rifle, I always pick up the reflex II with amber triangle. I do like my acog, it is my second favorite, but it is a 4x and even with bac it is a bit much magnification imho for real cqb stuff. Yes, the aimpoint dot is brighter and easier to pick up. Yes, aimpoints do use batteries, and even with their great battery life I have still pulled a rifle out of the safe with a aimpoint and dead battery. (It was not the cet one though). For me, the relfex II works great. I can see more around the exterior of the sight and the triangle is very quick to pick up for me. I am in fact buying another 12.5 triangle model to put on another of my rifles. My wife prefers the Reflex II also, she says it is the easiest for her to shoot (she has not shot a lot). It is really a individual preference, personally I think the reflexII's get a poor rap. I have not experienced reticle washout in my shooting, but I don't doubt it can occur under some circumstances. It is sad to say, but the way you have to go to find what works for you is basically to try all the systems out there a couple times to see what you like. Which is why I have so many sights - and why you see so many for sale. I have often wished some rich guy would throw a reflex II, aimoint, compact acog, acog, and eo tech into a box and let people borrow them to try before they buy a new sight. In fact, if I win the lottery, that's what I'll do!, so hold your breath.
Anyway, in my opinion, for the price(especially if you can get one used) the reflex II is a darn good sight, and I would not count it out.