Personally, I think the PS4 is better. Interface is cooler, looks better and isn't windows 8. Controller for me has the edge, apparently the new Xbox One controller is a little clunky (Still works fine though), Hardrive space can be used up a little to quickly as games take up a lot of memory (I'm sure, don't quote me on that). Voice messaging has been taken away, performance is a little better, more games for PS4, Destiny exclusive content for PS4 only, PS4 options are a lot easier to use and find than the Xbox One, I could go on. Playstation PLUS is better than Xbox Live, you get a good few games free and so on, I haven't looked much into it. I just think the PS4 looks more fun to play, the Xbox One looks a little bland to me personally. Also, the Xbox One comes with the kinnect, which is quite usless, it never works out like the adverts show, and it's optional with the ps4. I'm not big on Microsoft anymore, I want a change and a lot of people I know, including friends have grabbed a PS4 and they're saying it was the best decision.
This isn't a huge comparison, I mean I could really have put more time into my post but that's just the quick sum up of my personal opinion. Playstation has it in the bag this year, Microsoft just gives me that restricted feeling which puts me off. I'd get and Xbox One later next year, when and if the price goes down. The only games I care about for Xbox One are Halo 5 and Forza 5 but that's it. I've played the Xbox One, and to be honest it was okay. I wasn't mind-blowing for me but it wasn't bad either! But, when I played the PS4, I loved it. I've just been getting more and more into Sony, I just prefer them. That's just me.
But, if your friends have and Xbox One, you might as well get one. You could save your money but it depends on how badly you want to play games with your friends. Not sure if what I've said has swayed you in anyway but if I was in your position, I'd get a PS4, heck if you did, you'd still have some money to spend. Oh and I may have stated this is just my rushed opinion.