I had the same decision to make a few months ago, after physical examination, the Griffon's seemed cheaply constructed IMO; reviews said the toe piece (under toe spring/slide mechanism) has a history of breaking. The construction of the SAS2 seemed more solid, plus no toe piece mechanism to break.
I went with the Rossi SAS2 120: No problems as of yet, but that's not to say Bushwackerin's report of heal peace problems doesn't hold true.
Warning: If your going to remount, the 2 back rear heal piece screw holes on the new SAS2's are not the same as the older universal PX12 & SAS12 holes. The holes are set back (Guessing, can't remember) about 10mm.