Jolida202a vs. Creek 4330

I am considering the purchase of either a Creek 4330 or Jolita 202a. I tracked down my local dealer. This is the highest end that this poboy is able to reach. I thought the Jolita was good in performance and looks but I was a bit annoyed with what was like a 'wash' or 'screen' of a sort of hiss. It wasn't constant but seemed to fluctuate with the volume of the music. I can't imagine that enthusiasts have experienced the same and still have such praise for the unit. The dealer explained it to me as possibly a poorly seated tube (although he couldn't fix it) or what he called 'tube rush' as an admitted amateur in tubes amps I have no idea what it is. Do you have any comments? Do the tubes have to be upgraded? I don't thrill with the idea that I've got to imediately change all the tubes in a brand new tube amp to get quality sound.
Thanks for any comments on either unit.