First, I'm guess you mean Griffon 12 (Griffon's are a 12 DIN binding, unless things have changed this year...)
Griffons will be cheaper, but they're pretty much all plastic and not as durable.
FKS 140s are more durable, and will release better/not pre-release as much.
I'd say the FKS 140s are the better binding, but Griffons are decent, just a bit less durable.