Power conditioning for digital gear AND tube amp?

I use the PW DAC/Transport, and have owned a variety of tube preamps and amps. I have had three power conditioners in my system: a Synergistic Research PowerCell, a RSA Haley, and a Balanced Power Tech CPC. The SR PowerCell hyped up the bass and treble, resulting in a somewhat bright presentation. I sold it without any second thoughts. The RSA Haley improved clarity, but worsened dynamics. I use it in my headphone rig, where it works really well. For my system, the best sounding power conditioner has been the Balanced Power CPC. It improves clarity, imaging, and detail, and does not truncate dynamics. At $500, it is the least expensive conditioner I have owned, but the best so far in my system. I do have a nagging desire to try a Pi Audio UberBuss, which also gets high praise, although is fairly pricey when you in factor in the cost of a good power cord, which is not included in the price. But Pi Audio also offers a 30-day return privilege.