I have become a big fan of 4 fletch the past couple of years after shooting some of my buddies four fletch.I tune my arrows very well first,so I think any style of fletching will do fine.I made up a dozen of the same arrows a couple of years back.Three were 3-4",4-4",3-5" and 4-5".They all grouped together at 20 yds.You will a bigger difference in trajectory at 25 yds plus.Four fletch may give more surface the 3-5",but I like a lower profile 4-4".Which it seems to have a flatter trajectory then 3-5".