I got this Sig Romeo 5 red dot from Amazon a couple days for around 130 dollars and have been really impressed. I own 2 aimpoints, a Burris fast fire and a bushnell tr25 so I do have a little experience with them. The thing I like best is when you pick up the rifle the dot is on and when you lay it down it goes off after a couple minutes. It takes a cr2032 button cell and the battery life is supposed to be around 4000 hours. You can also cut it completely off and on. It only took 8 rounds to be in the bullseye and the optics are crystal clear. I think it is a heck of a deal for a budget red dot.