Thanks so much for the response.
Would you agree that if my electronics (Quad 99 amp and pre-amp) seem a bit on the bright (or shall I say "thin") side, at least with my Spica TC-50 speakers and Velodyne sub, the regular 3/5 would be the better choice?
Would you agree that if my electronics (Quad 99 amp and pre-amp) seem a bit on the bright (or shall I say "thin") side, at least with my Spica TC-50 speakers and Velodyne sub, the regular 3/5 would be the better choice?