im partial to the vortex strikefire red/green dot. fantastic warranty comes with tons of accessories and a really nice set of mounts for absolute and 1/3 co-witness and low profile mount.
mine has withstood over 250 rounds of 458 socom without losing zero. i would say its pretty tough.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent