For $200 you can get a Vortex Sparc II that's got a 2-minute dot, auto shutoff and a lifetime warranty, rare on red dots. Mine's been on a .357, an airgun, and now rides on a .270 Mauser. You'd be surprised how well you can shoot with one of these. It mounts on a pic rail or a square-notch Weaver base. The Aimpoints are great, but the cheapest price I can find one for is more than 2X the price of the Sparc.
