Tube Preamp vs Solid State

I am in the process of choosing the right preamp for my system.
Speakers are Thiel CS 3.7, stereo amp Karan KAS 600 and source Ayon S5 network player.
Having a Karan solid state amp i can either take their KA-L Rerefence Mk3 preamp or go the tube way with a VAC Signature Mk2.
Will i benefit more mating the VAC preamp with my solid state amp ?
Any experience on the subject is welcome.
Thanks.