I have the gen I and a EXPS 3-4. Like them both quite a lot. Though the battery life is technically better on the AMG and honestly i really really like how large the window is on the AMG. Then Gen II is even larger. The AMG is roughly the same length and slimmer as well. Glass is better on the EOTech. Vortex has a blueish hue but honestly i think that's kinda moot for it's purpose. They're both awesome, you're likely to find the AMG cheaper.
My only gripe is someone desperately needs a shake-awake feature for holographics. Thoroughly enjoy that about the holosuns i've used.