I'd wait it out, look around at sales and see what's what.
The PS4 is a good system, and the X-Box One is a good system. I'd say the things like controller feel, exclusive games (this is getting fewer and fewer though, but obviously some games are still exclusive to a system), and features each system provide.
I've got the X-Box One and was pleased I made the purchase at the time, but was even happier when they announced they were putting through Backwards Compatibility to play 360 games (select ones, library will expand as time goes on). If you didn't own a 360 though, obviously that matters a lot less to you I'd think.
It's all in the details really, as to what you prefer Dave. I wish I had more time to game, and of late I've had a difficult time gaming at all because of my eyes and things, but I still rip into my first game for it (Titanfall) any time I can, and Battlefront looks pretty cool for any console... If not a tad frustrating (as all FPS's have become, lol. hell to get old). I'd imagine there are some good deals on consoles coming this holiday like Bill linked you to. I got one on the One last year on Black Friday-Monday.