VTL 7.5 S3 vs Jeff Rowland Corus with PSU

I don’t dislike the Rowland preamp but it seems VTL is always pairing up with Wilson so just wondering if the VTL 7.5 S3 would be considered an upgrade to the Jeff Rowland Corus. Considering the system.

I have a VTL 6.5 paired with D'Agastino momentum stereo amp with Wilson Vyette's, and could not be happier. The VTL replaced a Veloce battery powered tube pre, and a older VAC phi beta. Its very neutral, and accurate. I also hear that some like the ARC ref 10 with Wilson speakers...
I demo'd the Wilson's while it was running with a VTL 7.5 v3, it provided a bit more 'air' than my 6.5...but not in my budget. Heard at Audio Elements in Pasadena...

Thanks,  good to hear the VTL is a good match. Heard 6.5 gives you 90% of the 7.5s3 for a lot less money

Have you heard the Jeff Rowland with the optional PSU power supply. 

Jeff Rowland Corus with the optional  PSU