This question gets asked so much there ought to be a sticky to address it.
First and most important question is this.
What role will this tool serve?
Range use mostly would be my guess, but home defense and being tacticool seems inevitable. I'll want to put a light on it and be able to swap out an Eotech and scope I'll likely stick with my bolt rifles for hunting.
Second question.
What is your budget?
I'm open minded here, but I would probably not want to go over 2k at the worst.