Im a total newb here but my experience with the Sightmark Ultra Shot as cheap Eotech style reflex has been great. My friend has one as well and loves it as much as his Vortex Strikefire 1. I just picked up a Bushnell holo sight from a member here and he quickly mentioned that he also liked the Sightmark ultra as well. It's FOV is very similar to an Eotech buts it's an LED and not a laser diode. I own three eotechs myself and they are fantastic but I highly recommend the Ultra for the same type of FOV with reticle choice but cheaper. It has a lot a reviews on amazon and the like.
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This sight is a great reflex sight as well. It's open and not tube style and has a lot of protection for the glass. http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=1PBE7JWZ29SDJXT78H7P
These look very enticing. And WAY cheaper than an Eotech. I may have to pick one of these up to check it out for myself.