Where to find 'good sounding' resistors?

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.

Subject to their power limitations, I've used TX2575 throughout Atma preamp, Merlin bass augmentation module & modded SCD-1-- replacing everything in signal path from generic carbon comp, Riken carbon film, top Caddock MK132 & TF020, and several types of SMD. They are extraordinarily detailed, transparent & musical, with no sterility whatsoever. They are the straightest line to a high-end component.

To add to Lewm's list, I found that 10W Duelund graphite resistors were an improvement over Caddock MP820/1 in the crossover of an Esotar tweeter. Clearer & more detailed with greater sense of relaxation underneath, and more development of instrument body in the low treble down toward the 2200Hz crossover point-- which makes for a smoother crossover into cone driver of Merlin. However these are physically large resistors, up to 5" long.

BTW fondling the long, thin brown cardboard tube of a Duelund resistor has me yearning for Cohiba Lanceros.