Probably should take a minute or two to look over the forums and get familular with the layout before making posts like this.
This is better suited from the forum about product reviews more so than general discussion.
The Buck twins create some amazing videos and you can't go wrong, and for the price they charge for the CD's it had better be good stuff!
The only negative thing I will say about the Buck twins work is that I personally think (and I'm sure others will back me up on this) that only about 65% of their work is practical. The Buck twins have a lot of moves, flourishes, and ect that boarderline juggling with cards. Their basic material is more than potenent enough to make your average spectators jaw drop. I wouldn't recomend a lot of their material for beginners. If your new to card magic you are far better off going with Royal Road or something simular. Expect to take a while to master the Buck twins material, and expect to throw your cards at the door on more than one ocassion.
Dangerous is okay. I've not read any negative reviews about it. I've not personally watched it, but from what I've read, and been told by others it is a fairly good working view into the D:M's presentation of "street" magic.
Just as an added disclaimer: I'm pretty luke warm though on card magic in general, so I'm going to try to keep my jaded opinions to myself as much as possible. I think your better off spending the money on Strong Magic by Ortiz or Maximum Entertainment by Ken Weber, than both the Buck twins DVD set and this Dangerous, but thats again just me. After watching kid after kid after kid botch performances online because it was "the next hot thing" has reaffirmed my belief that to be a good magician you need a strong foundation in theory as well as practice.
Food for thought.