VAC Sig or Zanden 3100


We're down to two on our quest for a tube pre to compliment our Merrill Veritas monos.  Has anyone had experience directly comparing the VAC Signature MKIIa with the Zanden 3100?  Currently auditioning the Zanden in our system and very impressed.  Will try to arrange the same with the VAC if possible.  Thank you for your thoughts.  

mbump
Kevin has recommended the SE upgrade whole-heartedly!  I wish we could afford, but slightly out of our budget.  Perhaps if we went this route, we could consider a future upgrade.  

knghifi:  What would you say is the primary area of SQ improvement with the SE upgrade and what was the expense involved (of course, I could consult Kevin on this as well)?