Total preference thing. Both are good bindings. Marker Royal series (including the Griffons) used to have some issues with durability but they've been remedied. The SPX are a very good binding (same as Rossis.) Griffons are a bit lighter but that probably isn't what should drive the purchase unless you're really concerned about another couple hundred grams.
I'd go with what looks the best, fits the ski, and is the right price.