So I am wanting to do three gun competitions and I'm looking for an auotloader. I have it narrowed to a couple choices. Benelli m1 super 90/ m4 or FN Herstal SLP Do any of you have experience with either and know of any advantages/disadvantages of the two. I dont think I could go wrong with either but seeing as neither of these two are very cheap I'd like to make the best decision possible. Main reason for this gun like i said is for 3 gun, but it will also serve some role as a HD shotgun. Also what type of sights do you suggest, aftermarket, or the stock sights?