the yamaha cr--xx20 series receiver is generally regarded as their classic--the subsequent cr-xx40 series are supposed to be sonically inferior and aren't as sought after. (their integrated amps of the same period go by the ca designation). i still own and enjoy a cr-1020, though like rlwainwright i prefer the hk and tandberg of the same era. from a collectibility standpoint, the most powerful yamaha units hold their value the best.
