OK here is my dilemma. I have decided that a Mossberg 590A1 needs to come and live with us. I am just having a little trouble deciding between the 18 1/2" or 20" barrel lengths. This will be used for home defense. I realize that there is little difference in the way they handle. I guess it is more a question about capacity than length. So I would like some feed back from the members here. do you feel that the extra 3 rounds are a deal breaker?