VTL 450 or Parasound JC-1

Downunder-
My 450s are an 01 model and they are the 450 signatures, I don't know about the other upgrades you mentioned. If I was to keep these I would probably see about getting all the updates done. I am running them as well as the JC-1s unbalanced from the CJ 17.

I would like to know how the 450s compare to the Hurricanes and the CJ premiere 140, those would be some other amps to consider as well.

haven't heard the 450's and although i own a pair of JC-1s
which have given me much satisfaction,i also believe as others have stated that you should probably lean towards your preference for tube amps.
the JC-1s seem to favor balanced SS preamps and your Supratek may or may not give you the ideal synergy.
also it is my belief that the amp should be chosen in accordance with your speakers strengths,weaknesses and requirements.in this case both options appear as overkill.

Thanks to everyone for the great input. I think that I will probably upgrade to the Vandy 3A. I listened to them at a dealer and liked them quite a bit. I also checked out the Thiel (I think it was the 3.6) Although both the Vandy and Theil were powered by an Ayer amp so I have no reference to VTL or Parasound. I have to believe the character of the 3As is similar to the 2CE powered with VTL but more refined. So at this point Im thiking VTL and Vandy 3A. How does that combo sound?

The 3A Sigs are capable of a very high level of resolution WHEN set up correctly. They perform very well with tubes. In fact, the big man himself generally uses tubes.
Be careful with cable matching and all should be well indeed.
I think if you like what you have, this combo will take you over the top. Let the speakers break in for a while also.
As a side note, Ayre uses 3A sigs in their sound room. I think there is an obvious synergy with their equipment.