Really enjoying a bass heavy mash-up mix by a guy called Subvert on Canada's Muti Music. You can download it by rick clicking here:
Download Subverts promo ‘Dirt Mix’ (95MB MP3 Download)
Muti Music released what has been my favourite downtempo compilation of the year, Clipping Paths. It's full of awesome bass heavy hip-hop and dubstep influenced chilled out glitchy beats. Click this link to buy it from Amazon. You can also buy a Subvert EP if you like what you're hearing...
There's another phat breakbeat mix from Muti Music's label head Dov available on their website.