For me it was the PS4 but I am slightly biased because my favorite franchise is only on Sony platforms (Uncharted). I also thought they showed a nice amount of games that interested me that were either exclusive or have exclusive content (the Order, Uncharted, Little Big Planet, Destiny, Bloodbourne and Far Cry 4). Also a major plus for me is the Playstation TV. I've wanted it sense it was announced for Japan. I think its pretty awesome that it can stream games and entertainment services to another TV for a pretty affordable price. This will let me be able to keep my PS4 upstairs in my room and be able to stream a game to the living room for the whole family to play.

It convinced me that I made no mistake just buying my PS4. Not into Forza, not too into Halos (anymore). I think Crackdown looks boring. And I am not a big fable fan. Take that away and all i am interested  in that is exclusive is sunset overdrive , and possibly the new platinum IP. That is not worth buying another $400 console to me just yet.

A lot of the games I can still buy for my 360 if I so choose.

PS4 - Already own, but Little Big Planet 3, Grim Fandango, Ratchet, and Uncharted were all big announcements to me. Also curious about Entwined and Abzu.

X1 - Sunset Overdrive remains the only title interested on the system so no desire to purchase right now.

Bloodborne made me want a PS4 but wasnt enough for me to buy one. Same goes with the Destiny Bundle (White PS4 is sexy).

The Witcher and Dragon Age made me want a PS4 or an X1 (cannot drop the amount Id want a PC this year)

What really made me preorder the Destiny Bundle was FF-Type0 on PS4. If it was being released for Vita Id still not be buying a next gen Console.

Games I'm getting that were at sony's
GTAV
LBP3
The order
Bloodborne
Far Cry 4
MGS5
No man's sky
Uncharted 4

Games I'm getting from Microsoft's
Assassin's creed.

X1's games looked much better to me.

Xbox
The few PS4 exclusives that are interesting to me isn't coming out till 2015.
Meanwhile, the xbone has Halo Collection.

Xbone..the master chief collection is unbelievable..gonna pre-order the bundle when M$ release one

already own playstation,get a nintendo around Zelda