I have the Giraud, and although it is pricey, I will never part with mine.
The only thing to know about the Giraud is it is absolutely dependent on how you re-size your cases for fidelity in trim length, as the trimmer indexes on the shoulder. In other words, take your time re-sizing and let the brass relax; pause at the top of the stroke for three or four seconds. If you de-cap and re-size in a hurry, there will be differences in datum lengths, and the trim lengths will reflect that.
I hope that makes sense...