I've used various EOTechs, Aimpoints and ACOGs, and they all have strengths and weaknesses depending on what they're being used for. In a CQB situation, the EOTech is pretty much unbeatable. If you're looking for longer range (200 yd. plus) capabilities, one of the others may meet your needs better. Magnifiers are available for the EOtech which flip to the side when not needed, giving you the best of both worlds. I have a 552 with a 3x magnifier on my daily carry M4, and for my purposes, consider it the perfect setup.
What are you going to mount this on, and what are your intended uses?