Well, that's just the old dog syndrome ha! I'm 25 and frown upon kids your age, and I'm sure 35 year old guys frown upon me haha
But yes, one has to understand life is about going trough al the steps, one at a time.
We all bought some kind of useless crap when we were younger, and enjoyed it out of ignorance (ignorance is a bliss isn't it? ).
The kid wants the Beats because they're the hype right now, not because he cares how they sound or perhaps even how they look. If he gets the Nonotec Zoros, then maybe he'll have the better sound, but also then maybe his friends will laugh at him for getting "cheap fake ones", even though they might sound better. Skullcandy's are next in line, the good thing about this brand is that there are cheaper models.
So encourage him to do some "googling" about "good headphones" and wait if that changes his perception. If not, just get him something that looks "trendy", it's either Beats or Skullcandy, and fits your budget.
Oh by the way, +1 on the V-Modas, show them to him to see if he likes them, those cans look great and sound decent.