I don't really understand why anyone would buy an Xbone at this time and thus pay more for less, even given the small handful of good exclusives it has at the moment. We know PS4 is going to get a steady stream of quality exclusives, starting soon.
The OP says he already has PS+, which is yet another reason to go with PS4.
Since Xbone locks ALL online features behind the Live paywall (while really giving you nothing in return), there basically is no way to avoid paying for Xbox Live, as well.
A sensible strategy would be: Buy a PS4 now, make it your main platform for which you purchase exclusives and superior multiplats (=all of them, as it looks now) and use it for playing online.
Then wait a couple of years until a few Xbone price drops have occured (which will happen rather sooner than later, also depending on how much Xbone is outsold by PS4), then buy a cheap Xbone to play its worthwhile exclusives.
In my opinion, Xbone simply does not offer good value for money compared to PS4. Given the power gap, Xbone should cost closer to $300 USD instead of $500. Makes sense?
I'm being as objective as possible here. My personal opinion of Xbone and Microsoft is much more negative; I still believe they need to be punished for trying to take away game ownership from us. Given how they already succeeded with this stuff on the business side (OS and Office), I am convinced they'll try the same again with their next console, depending on how well Xbone does. I also don't agree with their practice of bribing companies to withhold games from competing platforms, and pressuring indies into releasing games on their system first and forcing parity for indie titles. I also don't like how virtually all of their Xbone launch games are littered with microtransactions, which is not exactly a good omen. Last but not least, Xbone appears to have been very much rushed (to prevent a PS4 headstart) while its OS and launch titles are still under construction even now. Beta tested in the future?
To summarize my opinion: The smaller Microsoft's market share will be during this eighth generation of game consoles, the better for gaming as a whole.