The dillon is nice to use for small batches. It performs really well, but you still have to process brass one by one.
Honestly, if I had another batch to do I would buy the swage-it tool for the 650.
Just bolt it there while you do the brass processing toolhead, no extra step.
My brass is mostly trimmed and decrimped so I just deal with the super swage and the wft trimmer now, but for any real processing, seriously, you need a toolhead with the dillon trimmer and a swage it tool. That way you just crank the handle and end up with processed brass 1000 or so per hour.
The wft is still a good option, at 2000 rpm on a drill press you can process 1000 an hour. I did 500 or so yesterday in under 30 min. Leaves a nice finish if you insert slowly at 2k rpm.
Every time you need to handle the brass you loose time... The 650 is a huge time saver so why not just swage and trim on it, every pull gives you a prepped brass.
The giraud trimmer is more a benchrest thing imo, i dont see the benefit for ar15 ammo. Still need to handle brass one by one, thats another hour per 1000 rounds.