CCC is just Euro-Defcon. It's fine if you prefer Europe over Vegas (understandable!) or winter to summer, but otherwise: it's the same thing.

Yeah and CCC is in one of the most expensive seasons (between Christmas and New year) in the most expensive country in Europe.

I've considered going there once or twice but the hotels were ridiculously expensive. It was around €200-250 a night, for me that's way too much. And the travel on top of that (i don't drive and live in southern Europe so I make less than most Germans). And I'm too old for shared room hostels. Here in Spain I can get a 4* hotel for 70€ most of the time.

It's a bit similar to DefCon in that sense. Except that it's held in real cities and not a casino resort.