My opinions are based on solid state in a vinyl / ESL system. The Vishay VAR series are rated at 300 V if IIRC, so they are suitable for any place in the amp (unless you are driving ESL's directly). IMO, VAR are better than any of the Caddock resistors that I tried: less edge, more clarity. Clearer than Mills WW.
@ieales points out that all components have sonic signatures. That is absolutely correct. That certainly includes the resistors, capacitors, and transistors elsewhere in the chain. But this is a very good time to determine what you like, so that you can, in time, get more of it. I would definitely buy two Vishay VAR and two AudioNote to audition - that's how I started on the DIY road.
Good luck!