after looking at 870's, Benelli's, and Stoegers(just because their tactical model is cheap) i'm pretty sure I want an 870. I just dont know which model to buy. I like the feel of 18" tactical's, but i dont want to sacrifice that much accuracy since i'll be shooting clays with it mostly. so i was thinking 24" barrel. would that be accurate enough? i'm looking at getting a pistol grip, so i'll probably just get one with a wooden stock to save money for now, how much can i save getting a used gun and is it worth it? should i get the extended magazine? any advice or critisisms?