None. I don't buy bad music from my favourite bands.
Of music I did try from this year the two most poor efforts for me were the new Cradle of Filth and All That Remains. The former just being boring as hell and ATR album is too mainstream sounding and really watered down crap. Oh yeah that British Lion album of Steve Harris was awful, another dire album from 2012.
In This Moment Blood is another one in terms of being inconsistent and the sound is just not anything to remember, Star Crossed was a far far superior album, Blood sounded too electronic in the guitar tone.