What case he uses doesn't really matter. That to me has always been a completely personal thing. Get what you like and don't worry about what other people think of it.
HOWEVER, I would suggest reading reviews from people that have the case and if possible an in-depth pro review to learn about anything that could be a problem for you before you buy.
I spent a lot of time looking at cases before I settled on the Antec Performance One P160W before I got it and I love it, in fact I'll never go back to a case where you unscrew and slide the panel off after using this case.
Reviews is also something I had been able to do before I let my gf pick out her case, which is a freakin nightmare to work with.
You're in luck with the Rosewill Challenger, there are a few in-depth reviews out there
http://lanoc.org/rev...will-challenger
hxxp://www.youtube.com/watch?v=7FVgL-YqqdY
Follow up to that video using that case hxxp://youtu.be/ReFbvSfKfh8 over all I'd say he doesn't really like it, but then the way he talks about cleaning it I'm not so sure he really knows what he's talking about.
For others
https://www.google.c...allenger review
Antec Three Hundred, Nine Hundred, and Eleven Hundred are all good cases as well. I know someone with the Nine Hundred and he really likes it.