For me the #15 wins hands down I have been using it for the last couple of weeks. I find I keep going back to it, just does what it says on the tin. Give me a great shave every time, if I had to give up every razor (not going to happen !!) but one I would keep this one.
I currently own 6 aristos, I still shave with all of them except one (it is still in its original wrapper and I am loath to unwrap it) they are all good razors but.............
I have some of the later US ones. They all seem to shave alike. For some reason I don't care much for their looks. I do like the Jr(British) that I have. Very well made and clean looking razor, shaves well.
Been bidding on and off for a British aristo. But the prices here haven't matched their quality.