Which artists' music do you buy without audition

We all have our favorite artists and often have large collections of music by them. Name some who when a new cd or vinyl comes out you will buy without hesitation, audition or others' opinions.

Emmylou Harris is one of those for me.
Peter Gabriel, Dreamtheater, Porcupine Tree, Rush, Yes, Alan Jackson, George Strait, Lyle Lovett.
Me'shell NdegeOcello, Susana Baca, Patricia Barber, Cassandra Wilson, Charlie Haden, Andy Bey, Tracy Chapman, N'dambi, Steve Earle.
Pink Floyd, Mars volta, david bowie and frank zappa.

Though most cds I dont buy unless I see it for 8 or 9 bucks. my pink floyd collection spans about 40 lps, mars volta about 20, david bowie about 20, and zappa about 35.

I also have a lot of beatles, but I only buy certian beatles lps. I just want a complete red japanese set(I have 3/12 now and one of the original 60s red wax jpn)