Naim Hicap2 vs Teddycap vs Avondale power supplies

I would like to get some unbiased comparisons
on the sonic differences between these power
supplies for Naim XS or Supernait int ams.

I have an idea what the Hicap2 does for a
Supernait as far as adding a lot of weight
to the music. This may be too much for my
room. What I would like is an improvement
in sound stage width, detail and vocal presence.

If anyone had done any comparisons, I would love
to hear from you.