i am just starting to get back into shooting after being out of the game for abour 4 years. i recently bought myself an AR15 (5.56/.223) for messing around at the range and my friends private property, i have always wanted one, and of course it serves as a home defense weapon. i am awaiting my membership to a club that has a 50, 100, & 300 yard outdoor range, i will need to practice on the shorter ranges before i can attempt to qualify for the longer range, of course. i have never participated in any competitions or shoots, so i am completely in the dark with that stuff. i am not a veteran, i am not a LEO, i am not active military, i am not a sharp shooter, and i am not swimming in money!!! so given that, i want decent quality optics which will allow me to participate in both long and short range target shooting, and maybe once i get some experience and practice under my belt i will participate in some competitions. for right now i just want to get back in the groove of things and have some fun blowing off some rounds.
knowing that, i also don't like buying things twice. so i don't want to get cheap equipment, but i WILL NOT spend more than $500 on optics, i just can't do it, doesn't make sense given my financial position. i had a hard enough time telling the wife i spent $1100 on the black rifle, nevermind trying to explain $500 on a sight system for it!! (do those come with an extra bedroom??? haha) i really like the EOTech and understand the difference in quality, so when my taxes come in i would feel more comfortable spending the $300-$400 on one, so i think that's what i'll do.
Send a PM/email to Lowracer. He's a dealer on this board and often runs group buys on EOTechs. I'd suggest getting the XPS2-0 given your price requirements.
I understand that you're on a budget. However, the most accurate gun is useless without a good sighting system. Good optics are expensive but they're worth it in a number of ways.
That said, you should also look at Aimpoints and other good red dots before you buy. You might like the others better.