I have one, I also have a P15 and a Power Plant Premier. I love them. I had a P5 that I replaced with the P10--palomino has that now.

I find that they improve the sound of a system by a larger margin than any other power treatment I've tried, and the flexibility they offer in modes and settings is a great boon to tailoring the sound.

Everyone has a different idea about what is "worth the money." You should be able to get one at a discounted price as they are no longer in production. I got mine about 4 years ago at 60 percent of the list price during a sale from PS Audio . . . that tipped the scales towards me getting one as I could swing that, not the list price.

A PS Audio PerfectWave AC-12. I've been rolling power cables lately and I keep putting that one back in. That cable powers all my regenerators.

Sorry to be late to this one, but I'll cast another vote for the PS Audio PowerPlant devices being the best power product I've ever used.  I bought a cheap PowerPlant Premiere (PPP) on eBay maybe seven years ago and have loved it ever since.  It made a noticeable improvement in my system at the time.

Last year I was redoing all my cabling and tried an experiment with my amplifier (Pass Labs X-150.8).  I unplugged the long AQ power cable I had going into the amp from the PPP and plugged in a (generally better and broken in) Nordost Shiva power cord straight into the wall from the amp.  The sound was grainy, harsh, and thoroughly unenjoyable.  This was a noticeable, instant difference that anyone would have heard.  The longer cheaper cable went right back in to the PPP / Amp and all was right with the universe again.