tube amp help CJ,VAC, or VTL


I would like to upgrade my Adcom amp and would like to try out a tube unit. Considering CJ11A,VAC100, or maybe VTL. What are the characteristics of the different amps and how much improvement can I expect? I will be using an Audible L1 preamp and Spica TC60's. Suggestions?
joekras
I have owned many tube amps, CJ ARC and VTL. I currently have Melos monoblocks and personally prefer them. The powersupply provides a lot of punch and the triode circuit is smooth and open without being as romantic as the CJ sound. However, if you can't decide I would go with tubegroover and buy ARC you won't be unhappy particularly with a VT 100 or 200
Audio advisor have a great deal on pair of VAC monoblocks. if you can afford 2K...they were 6999$ originaly.
Try the VTL ST 85. VTL amps seem to retain many of the good qualities of solid state, and give you all the advantages of tubes. LISTEN AND COMPARE IN YOUR OWN SYSTEM BEFORE YOU BUY, THOUGH...