Where to find 'good sounding' resistors?

Use Vishay bulk foil.

Go to vishay dot com and search for bulk foil.

Texas Components on-line is an OEM for Vishay and sells both TX2352(same as nude Vishay S102), and TX2575-- a lower noise version.) Try TX2575, IMO the most transparent resistor available.

Texas Components TX2575 should be on your short list. They're largely considered the lowest noise resistors you can get. You can only buy them from the manufacturer:

http://www.texascomponents.com/
713-468-3882

FWIW, Texas Components makes the S102C and S102K for Vishay. The TX2352 and TX2575 are essentially naked versions of the S102 using bulk metal foil. Michael Elliott from Counterpoint/Aria explains the Vishay hierarchy here:

http://www.ariaaudio.com/WVVishay.html