Any experience with Vac PHI200 power amp

Probably not an answer you are looking for.
Having owned VAC Vintage 100 monos and still own the Phi 70s (since 2005) along with a host of other gear.
I have to tell you that there is a "house sound" for VAC,
and perhaps thats how Kevin likes to voice his stuff.
They are both a bit lighter on bass and lean towards spaciousness over body.

All depends on your speakers and personal taste.
But if you plan on changing speakers all the time I would go for VTL MB125.

Very interesting to hear Rhljazz's perspective.
I was comparing the VAC Vintage 100 monos with
BAT VK60, VT130, Classic 150 (owned them all at the same time) They were all driven my AR Reference 1.

Then its my Phi 70s, compared against all sorts of Counterpoint gear (NP220, SA220, SA100, NP100)
Sonic Frontiers Power 2, and homebrew KT88 amps.
(not that I should expect 300B amps to have oomph)

In all cases they were mostly driving Avalon Eidolons.