What effect the drip tip has may depend on what device it is attached to.
I have drippers that get much to hot for a short metal tip, so I need a longer metal tip or a plastic tip.
On my Kayfun, I find narrow hole on the stock tip shoots a very concentrated stream, but a wide bore is more pleasant for me, so I use a stove pipe style.
On a small carto tank that I use for stealth, I prefer a shorty tip with a wide bore.
On my protank styles, I find the stock tips perfectly fine.