Are monoblocks better than stereo, with tube amps?

thanks for the responses, which have led me to more questions.
Czbbcl, atmasphere, unsound; what do you mean by 'modulation of power supplies', 'proximity', most importantly, what factor involving amplification's sound is more important then the monoblock versus stereo argument? Also, I understand a bit about why speaker wire should be shorter than interconnects, but should interconects literally be quite long (forgive the obtuse questions)