Im 22 and think the ED30 suits me over the 335 anyday as I tend to see more mature people driving them. Hope that doesnt insult anyone 
I totally agree, 335i is for a more mature public.
Another thing about E30 is that owning it comes with almost belonging to a club. Just the other day another white E30 came from opposite directions and the guys were waiving their hands thru open windows when I passed by.

I doubt that happens to 335 owners.
I love E30 for what it is. I had experience with E90 M5, but although it is a monster of a car and after driving it I had a silly smile for 2 hours and couldn't work the whole day (you should have seen my boss laughing at me) I am cold to it. I have this emotional bond to 335i Coupe, just like to E30, but stronger.