I have an EO Tech equipped carbine and another with an Aimpoint. I must say I love them both and have had zero issues with either. I've had and used both well over a year. I would trust either completely.
For pure CQB, I actually slightly prefer the EO Tech. The model I purchased also uses readily available AA batteries too, which is a plus. I can get replacements anywhere, including your ma and pa country grocery store. I am surprised at how long a set of AA's will last in those. When you need to change them, you can do so with the sight mounted to the weapon. Plus, once you buy the sight, you don't have to spend a shitload of extra money on a mount. Attach it directly to the flat-top and you are in business.
The Aimpoint may have a slight toughness edge, but for anyone who takes care of their weapon and doesn't use it for a battering ram, I see it as being tough enough. I have by no means given mine the baby treatment and I've had no issues.
I also love the ACOG, although price is an issue with some people. The cool thing about those is no batteries needed and if you want the best of both worlds with close and longer range shooting, they handle that role better than the Aimpoint or EO Tech.
I see a use for all 3 optics in military and LEO. All 3 are quality.