The Drum and Bass tunes on this are a pretty decent, if incomplete snapshot of popular DnB of 2011. There are some great tunes on this, even if it isn't quite as diverse as the selection could be. There are some glaring omissions, but in fairness this doesn't claim to be the "best of" or "greatest hits" of 2011. I did thoroughly enjoy the drum and bass tunes on the album, every single one of them.
The dubstep however is pretty poor. Of the 20 or so dubstep tunes, only a handful are really a good reflection of the genre. The rest are hell bent on trying to get the heaviest drops, the loudest, most robotic sounds and as a result, most of the dubstep tunes are a reflection of how commercialism has warped dubstep away from its reggae and dub roots. This is a problem that has plagued UKFDubstep for a long time now, and it doesn't look like it is going to reverse this policy. The kids seems to like it, but for anybody who has been listening to the genre before the 2010 dubstep "explosion", I don't think the music on this album will suffice.