Looks like it's been said - any pc's except the ones that are included will help. Bang for buck in my book goes to Essential Power the Essence and Triode Wire labs. BMI is a perennial favorite of mine - if you can find a Whale Elite, buy it. It will work anywhere in your system.
Dynamic Design is also hard to beat and pricier, but good deals can be found. There's a digital Challenger listed here that I want to buy even though I don't have a spot for it! One of DD's digital is on my phono preamp and it sounds terrific - big, quiet, nuanced, etc.
And, yes, your Furman! I like to work from the wall out with cabling, so that's where I'd start, too.
I have some white papers from Vincent Galbo of Plinius/MSB fame for power distribution that I used to wire up my audio. If you (or any of you) are interested, PM me.