Re: Hidden deck fasteners
We built a deck with those "hidden deck fasteners". Had one bad board and wasn't too difficult with the Tiger Claw fasteners. Of course it was a baord on the end. Can't imagine fastener that requires you to have a biscuit cut in the side of the wood easy to replace.
We actually ended up using TigerClaw fasteners on the recommendation of a friend. Our contractor installed them from the top of the deck which made it easier on him and easier on our pocketbook. I've heard if your outside wall is not straight it's hard to adjust the space between the boards to compensate with any hidden deck fastener.
I also know some like, Invisifast have to be installed from underneath the deck and might be something to look into besides the 2 you mentioned.
DIY Home tip - “Your life will be no better than the plans you make and the action you take. You are the architect and builder of your own life, fortune, destiny.”