I purchased the Giraud, processed about 1500 cases on it, then sold it and purchased an RT1200.
The RT1200 is ALOT faster when processing 1000's of cases (Assuming you are installing it on a progressive press with a case feeder). the Giraud may be SLIGHTLY more accurate, IF all your cases have been resized 100% accurate, since the cases headspace off the shoulder, if your resizing process isn't 100% accurate, guess what? You trimming wont be..
The Giraud made my hand's hurt after a few hundred cases, a problem that is non exsistant with the RT1200.
The RT1200 is NOISY, ESPECIALLY with the vaccum. If you could somehow locate a vaccume in another room/area and run a long hose it would be about 1,000 times better.
Don't get me wrong, the Giraud is a work of art, but I think it's better suited for the target/match shooting folks than those of us that reload 1000's of rounds in bulk.
The Dillon is not with out it's faults, but I do feel it is a better machine for mass processing.
As for chamfer/deburr, I do not, after trim, the cases go into a corn cop untreated tumbler for about 1 hour (Probably doesn't need to be that long), they come out with no burr's. I have a Lee universal case expanding die on my loading toolhead that expands the case neck every soo slightly just so my Mr Bullet Feeder can drop a bullet on the case neck and not have the bullet fall off. If you are loading boat tailed bullets by hand, there would be no need for the case neck expander.
-Masta