Hi guys! 
 
Which Superlux do you recommend for PRODUCING rock music, so monitoring instruments, editing music AND recording vocals without sound leaking? I was thinking about the 668B for a long time but than I realized that for clear vocal recordings a closed headphone would be a better choice. So I started to read about the 669, as it's basically considered to be the closed version of the 668B. But there are just a few reviews about it, and I couldn't decide.
 
Then I've read a lot about the 662F, because lot of people said it's THE perfect studio can with a budget price tag.
 
I simply cannot decide between the 662F and 669... please point out some differences! 
 
I don't want to spend more money than the price of the 662F (34 Eur), and I definitely need CLOSED cans, so I would be thankful if you made my decision easier to choose BETWEEN this 2!
 
Thank you!!!  

I cannot help you in the comparison but I can say that the 662 is very good. Actually I have the CAD mh310 but it is the same thing. This review might help.
 
http://www.head-fi.org/products/cad-mh310-superlux-hd662/reviews

Apparently Audiohipster uses the 662's in his recording studio, and not the 669 for that application.

Or this review
 
http://moonroomrecording.blogspot.com/2011/03/cad-mh310-superlux-hd-662f-review.html

Thanks guys, I've finally ordered a 662 F. It should be here in 1-2 days, so maybe after some burning-in I'm gonna post my first impressions here.  

Good call for the $ it's hard to beat. I still use mine a fair bit.

@ mrbyu
 
how did you find these cans in the end ??