Had a holo sight for awhile, attached to a shorty AR, nothing like it for super fast both eyes open target acquisition...but dot is not fine enough for shooting groups....great for coyotes not so good for ground squirrels.
Currently using Leopold cqb and it is a nice sight but NOT as fast as the holosight, takes AA batteries and my holosight took N cells, what a pain, also seemed to drain batteries while off. Leopold will work as a sight w/ or w/o batteries...leopold also heavier. If I had it to do all over again I might go with aa AA powered holosight/eotech with quick release levers...a buddy has a Burris with a lighted reticle that I think is awesome...again, works as a sight w/o batteries.