I don't have a Virtue amp, so I'll won't comment on the cap values. I will say that system interactions are important.
Recently, I had the audacity to make a suggestion to Michael Mardis about the kind of cap that would be better than Auri Caps. Well, the cap is only one of a long string of components that affect a system's sound.
If your speakers sound bright, then Auri Caps may not be a good match for you. However, how do you know if the brightness is being caused by the speakers? That's the question you need to answer. If the speakers are, indeed, bright, then you may want to deal with that issue to get a more neutral-sounding speaker.
Different caps, different ic's, different speaker cables, different speaker internals may be ways to address the brightness. Ya make your choices and ya take your chances.
I have Hornshoppe Horns which tend to be a bright. Auri Caps were not to my liking in my system, but neither were my speaker wires, nor my silver interconnects.
IT'S A CRAP SHOOT! There are certain tendencies in components, but how they will act in your system, you will know only from your experience.