Just finished watching the announcement and my opinion that PS4 is the better choice is definitely cemented. It's pretty apparent that Microsoft's goal with the Xbox One is multimedia as apposed to gaming and for some people, families, the Xbox One is right on the money. But for me, the fact that they spent the majority of the time talking about everything other than gaming, and showed only two Xbox One exclusives, I'm not sold. The PS4 is the clear choice for anyone who wants to buy a video game console FOR the video games. The PS4 will have much better and many more exclusives than the Xbox One, just like last-gen. The games that will sell the best on the "XO"(?) will be available on the PS4 as well.
I'm for sure gonna buy the PS4 and wont have any regrets like I did when I bought a 360.