honestly speaking, there are only a couple TRULY next-gen games here (not re-works of ps3 games I mean)
Knack, Killzone, Need for Speed Rivals (this is not counting digital games like Warframe or Resogun)
Knack is phenomenal the poor reviews really do it no justice, the main complaint is that it's too linear (but has anyone ever played crash bandicoot? ever?) it's fun, it pretty, oh and did I mention that it's FUN??
Killzone offers nothing terribly new to the FPS genre (like theres much left to add anyway) but it is a solid game, it's gorgeous, and will get an edge on having a great exclusive multiplayer only on PS4
Need for Speed is also awesome, although it's kind of just holding us off until we get Drive Club, or until we get a next-gen Ridgeracer or Gran Turismo.
just these three games alone are fairly good for a line-up, not to mention all of the ports. I would not be (or even come close to) saying that this is a 400+ dollar good investment, by itself. BUT we know this is where the future of gaming is going to be, and we have plenty of great titles on the way (Final Fantasy XV, Kingdom Hearts III, Uncharted 4, Tekken X Street Fighter, Guilty Gear Xrd, Infamous Second Son, Dragon Age: Inquisition, Natural Doctrine, The Order 1886, Project Phoenix, and seriously I could go on)
in short: decent start, bright future.