You can make a protein skimmer out of all sorts of things.
Physically larger size does not necessarily make for better performance. I've seen top end recirculators that outperform venturi units of much larger size.
What skimmer design is best is a matter of subjectivism, and when doing a DIY system, quality of construction makes a huge difference. I myself have built a couple spray injection systems that have worked very well, but nowadays I run commercially made recirculators.
So the short answer is that there is no best or worst way to do it.