ROSKOE; I believe a slimmer arrow would get better penetration in a target than a larger arrow of same weight.but once you go from target to animal I prefer a heavy arrow as opposed to a lighter slimmer one,because once your broadhead opens him up it's easy saiing.That just my 2 cents.Anyway I like all the advantages of a heavier arrow.I've heard you comment on how queit your bow is with the heavier arrow many times.As far as the guys at the archery shop trying to sell you on something thats their job,plus have you ever noticed how each shop tend to push a differnt bow,broadhead arrows ect.One shop swears by mathews the next may praise hoyt and so on.