I had a VT100 MKII and the one issue I was not crazy about is the fan that this model has. Depending on your setup it can be noisy. The VT100 MKIII I think did away with the fan so it isn't an issue. As to the other models I don't have any first hand experience.
Audio Research VT130, VT100 MkII or VTM120?
I do have VT60 and it has not enough power to drive my Usher Dancers 8571 MkII. Preamp is LS-15 with NOS Telefunken E88CC and CD player is Shanling CD-T100. What is you expirience and what would you suggest to use for the amp? Many thanks