I'm debating the same move. I guess with Playstation plus you can get all kinds of discounts on games and even some free games on the Playstation Store. It may be worth it.
I loved the wonderbook awkward moment when it decided to stop identifying that woman's movements. The guy that was hosting it should have "awkward turtle'd" off the stage.
I thought it was disgraceful of the 2 women playing wonderbook who could at least smiled, that 1st girl was not even listening to what the game was telling her what to do plus when will ms and sony understand that these on stage demonstrations dont work well on stage with stage lighting etc taking effect. Do those women have any interest in gaming or knew what a move controller was lol.
But that PSN Plus deal just put it well ahead of XBL in terms of value for your money.