I just recently purchased a Sig Sauer m400e. It's the one with the fixed front sight and the flip up in the back. I'm keeping these for backup sights but I would like a go to sight that's clear and reactive. I'm open to a short range scope, a red dot or even a holographic sight. I'm not looking to break the bank but I do have around $200 that I could possibly put into it. Obviously I would like to go less than that BUT I don't want to buy a piece of crap either. Any options and feedback would be appreciated. I'm mostly using this gun for planking at the range, home defense if necessary and maybe some deer hunting. Thanks is advance for any post!