Here's what I have, the Ultradot 4
http://www.discoveryoptics.com/uddfourdot30b.htmlThere may well be places to get it cheaper, but I found this site quickly.
I like the choice of 4 dot sizes (4, 8, 12, & 16 moa). Small dot for sighting in & more precise stuff, generally I leave it on the 8moa for still hunting, & the 12 or 16 moa when I think there is a good possibility of an up close & personal encounter with something like the brownie I ran into last year. It adjust quickly, easily, & positively.
Between the different dot sizes & brightness settings I have never been in shooting conditions I couldn't be comfortable with.
The 30mm tube makes for quick target aquisition.
It has held up well to torential rain & cold, two drops onto hard-packed ground (don't ask), & several hundred 1350 fps 320gr loads along with lighter stuff. It's not the cheapest, but I'd buy another in a heartbeat.
