Already have a PS4, and a gaming PC.
I used to like Xbox, but Microsoft tried so many uber-controlling ideas with the Xbox One that it put me off the machine for good, despite them changing their mind on a lot of them.
Playstation Plus is actually pretty good value for money. A year's subscription for the price of a game, and I've already got Bioshock Infinite, Metro Last Light, Uncharted: The Golden Abyss and a few other games for completely free. And that's just in one month.