I am partial to the AZ EZ fletch mini due to how quickly you can fletch a dozen arrows with one (or actually with two, I can add wraps, fletch, and tip a dozen arrows in under a half an hour).
I'd buy arrows prefletched if the only option was to do one vane at a time.
Do you have the mono or the multi jo-janI have a bitz and a jo-jan. Bitz is nicer but neither will let you dial in a specific offset, you have to eyeball it and Mark your settings. Doing 3 at a time would be nice but those all look fidgety.
The mono, with straight and right helical.Do you have the mono or the multi jo-jan