Which AR should I get based on the following

[Skribs]

Actually, it will have a bigger advantage at 10 feet than it will at 300 yards. If I am "snap shooting", why do I need to know how to use irons, either?

what will you do if the rds fails? fall back to irons that you've neglected to train with?

Good point. But I'd still rather practice using the sights cowitness as opposed to by themselves. If the RDS fails, I'm not going to take it off to use the irons, I'm going to use it as a tube that I see my irons through.