If you're processing that much brass, and you have the money, it'll be worth it.
I bought a Giraud after messing with a Forster for a few years. I'm very glad I did. In fact, my friends and family all bring bags of brass when they visit...everyone hates trimming so why spend hours upon hours doing it?
Also, don't forget that the Giraud chamfers inside and outside at the same time!
So by purchasing one tool, you'll be significantly decreasing the time required along with completely removing the next step. If shooting/reloading is where you spend most of your free time, $400 is not that much to drastically simplify that process; especially over the lifetime of your hobby. So why are you looking at the Gracey again?
Change calibers? Between 2-15 min.
Option 1: Change case holder. Adjust cutter head blade. 10-15 min and a couple ruined cases setting it up.
Option 2: Change case holder. Change cutter head. 2 min
Case holders $30
Cutter head w/ blade $45
A complete setup per caliber runs $75. I only buy Giraud setups for the stuff that I load a lot of. The .45-70 and .405 Win and oddball stuff, I trim manually. But when I'm loading 2,000 rounds for a varmint hunt, or really trimming down some .260 Rem the Giraud is worth its weight in gold!
Ed