Went out to the range with another officer today. He recently got a Bushmaster M4gery and has an EOTech 552 on the flat top upper. I took my Bushy A2 with an ARMS 39 and CompM with me. I'd never used an EOTech before and he has never used an Aimpoint, so we took some time swapping rifles. I must say I now understand why everyone likes the EOTech so much, but I'm still not a convert. The other officer also had a great time with the Aimpoint. The only conclusion we came to was it did not really matter which optic was on the guns. They were both reliable, top of the line optics and both do the job they were designed (and purchased) for.
I was also currious about the EOTech and my astigmatism. I was plesantly surprized that the image was not distorted like I expected but appeared as a series of very small individual dots that made up the image.
Since my friend was new to AR's he had never heard of the IBZ, which I use, and has his rifle sighted in for 300. We moved back from 50 yards to 150 and he was impressed with the IBZ and how easy it was to keep the Aimpoint on the steel plates and get consistent hits. The EOTech was also scoring hits at 150, just not as many on the small plates.
For now I'm keeping the Aimpoint, but if I find a good deal on an EOTech....
Sarge