I use Gold Tip Traditionals more because that's what I started with than for any particular reason. I've heard it argued that the skinny carbons offer better penetration, and that does seem logical to me. I've also heard others say it doesn't matter much in flesh and bone. But if there is any difference to be had, the skinnys would get the nod. I do think it is easier to fletch helical with a standard size shaft. I personally use shield cut feathers.
The Gold Tips have worked well for me, and now I have nocks, inserts, etc. for them so will stick with them. I do enough economic stimulating the way it is. :rolleyes: