Out of those two? I'd take another Knack. The first one is meh but the foundation is solid and could easily be built upon.
I'm not interested in TitanFall.
To be honest though, I'd rather a new PSABR than either of them.
Bet with Adamblaziken:
I bet that on launch the Nintendo Switch will have no built in in-game voice chat. He bets that it will. The winner gets six months of avatar control over the other user.