Being at roughly the same stage as you (PPL) andbeing endorsed on both the Warrior and the 172, I'd tend to agree with the other posts that there is really nothing in it. I'd go with the 172 but only for the simple reason that there are 2 of them you said, so you will have more of a chance of hiring one when YOU want to. Also if you take friends for joyrides, the high wing will give them better views (small i know, but its worth considering). Also, if you ever go and practice stalls and things the 172 will give you a bigger wing drop, which will keep you on the ball more, and its a bit more fun.
They are all small things, but since there is so little in it, its worth considering.