All things being equal, I'll take the SAFEST route when possible. Without knowing all the specifics, I'd say the SAFEST way to pull a trailer with a tractor would be from the FIXED drawbar. Raise 3-point draft arms up out of the way and go.
Now, there's times that won't work. You may need the trailer ball higher than the drawbar will allow. Maybe it needs to be farther back from the tractor. Whatever the reason, trailer towing can be done from the 3-point hitch with certain precautions.
One thing to consider. What are you going to be towing? (trailer/cargo) An empty trailer? A load of firewood? 200 bales of hay? I use a 3-point trailer hitch for pulling gooseneck trailers, as well as conventional "bumper pull" trailers. A gooseneck is worse, but bumper pulls will cause the hitch to raise when you have the draft arms even slightly higher than parallel with the ground AND then start down a hill. The forward "push" of the weighted trailer will cause things to happen that you'd rather not have happen. ANY loaded trailer can (and will) do that.
Part of the original "FERGUSON SYSTEM" 3-point hitchs that you'd find on all the old Fords and Fergusons was stay bars that attached just under the seat, and ran to the ends of the draft arms to stabilize the hitch for towing. Good if you can use them.