Knowledge Black Belt or EPractizeLabs

I have never tried any online courses or any other interactive learning strategy, but it seems like a nice alternative to purely book-based learning. Does anyone have any experience with Knowledge Black Belt (I only know their exams, which were OK) or EPractizeLabs? I would like to take the EJB exam soon and try out some other methods than the standard O'Reilly book + specs + Enthuware.

Regards
Gosia

a lot of people are using enthuware or epracticelabs. 've heard of knowledge black belt. just didn't know they are providing mock exams or likewise materials. i would go with enthu... heard its' good. you can check the certification results forum and take your call.