I played with the demo versions set up at Best Buy stores, and tried a bit of a few games, including FIFA 14 and Knack, and I got to see Killzone in gameplay, and I've gotta say, I wasn't really wow'd all that much. The controller looked pretty cool and was more comfy in my hands than the Dualshock 3, and the graphics looked a coat prettier and cleaner than the PS3, but overall, it just wasn't ENOUGH to demand a purchase.
The gameplay in these games felt just the same, if not a bit worse than many of the late-era PS3 tites. There was nothing really innovative in how the games felt. In terms of looks, like I said, it was prettier, but in a way it looked almost TOO clean and sharp for its own good. Some of the smoky effects in Knack were pretty neat, but it's just not enough to warrant me to spend $500 on a system and one game. And Killzone was just too standard; lots of it looks like it could've easily been done on the PS3. Especially since the amount of harddrive space for each game is just freaking ungodly.
I right now have $500 in Best Buy gift cards that I saved up over the past year, and I was going to put it all to the PS4 and a game, but I was thinking of putting it towards a 3D LED TV instead. I just feel I would get more value considering all the PS3 games I could be playing in 3D, and perhaps wait until the PS4 has something greater to offer later on. What do you all think?