Which artists' music do you buy without audition

Goldfrapp,Bjork,Radiohead,white stripes,The raconteurs,autechre,aphextwin,Bill frisell, patricia barber,futuresoundoflondon,plaid,orbittal,catpower,toriamos,pjharvey,katebush,strokes,kingsofleon,tosca,kruderanddorfmeister and i am sure i am forgetting one. Others I read reviews, read between lines, audition, then may be buy.

Autechre (Proghead is right, Autechre is something very special- just paid $229 for their limited edition new CD @ ebay) Aphex Twin, Kiln, The future sound of london, Bibio, Bola, The chemical brothers, Goldfrapp, Trentmoller, Felix Laband, Underworld, Pole, Massive attack, Biosphere, Amon Tobin, Colleen, Venetian snares, Mum, Efdemin, Deepchord and many more.
The reconteurs, White stripes, Radiohead, The Kills, The Black keys, Ryan Adams, Sufjan Stevens, Bright eyes, Norah Jones, Vashti Banyan, Nick Cave and Bad seeds, Cat power, Bill Frisell, Coldplay, Aimee mann, Tori Amos and many more