They all have their pro's and con's, even if its minor such as being a bigger jig, I use Jo Jan multi jigs that do six arrows at a time, we have several of them, A little old school bulky but work...a pro is they are totally adjustable for any vane or feather.
Since the invent of vinyl vanes, it said to avoid straight stretch like the plaque for Broadheads...
Helical preform very well but are noisy in flight
We use right offset as much as arrow and vane used allow full contact on each other...
Neil