Silly Onhwy61, I like the music as hard as it comes, definitely harder, deeper and more menacing than the likes of most cookie-cutter, standard issue metal bands are capable of cranking out (read the utterly BORING Metallica, et al), but I want the heaviness/hardness to arise from musical concept and the way an electric is tuned and played vs. the hideous decimation wreaked by poor recording technique.
I defy anyone to find anything much harder or more intense than "On the Virg" by Serious Young Insects, yet the recording technique is pretty fair, so it is listenable. Same with Squadrophenia cited above, but still one wishes for even better. Buckethead has released some of the rawest most grating guitar tones ever recorded and yet some of it is recorded well enough to make it sweet sonic nectar to me.
I second the last 2 Steely Dan releases and would add vis-a-vis Robben Ford, the sonically rewarding "Jing Chi".
Good thread -- please keep adding.