Power Conditioner, which of these 4 and why?

Thanks all for input.  I bought the Shunyata listed above.  

To Tuberist: re: PL integrated with the triton 1r.  The amp and speakers not broken in yet, but a match made in heaven.   The mids/highs are way better and more defined than i thought would be.  The bass is ridiculous, hit you in the chest type bass but not too boomy (recording dependent) but you can go, since build in amp, turn the knob to bass level for room. 
supper combos, these 1r’s Blow away speakers i have auditioned at more than double their price.    

+1 on the Inakustik AC-3500p.

@mlapenta,
I worship this power conditioner and the life it brought to my audio experience. Look into the Inakustik thread on this forum. I was very skeptical on the claims some owners made. But decided to take a leap of faith. Stunning is a mild word if I have to describe it. No doubt you will not find a single unit on the used market. I have provided my honest opinion. Hope you get a chance to experience the Inakustik AC-3500p. Good luck. 

I tried many and found warts in all.  Try them in your own system

PS Audio power 15 generator really a power amp. Had the Audioquest Niagara 5000 traded it in for the PS audio unit.

Takes much out much more THD without 
robbing my system if it’s sound like the Niagara did. (In my opinion the 5000 was a very expensive surge protector 

I just bought the Isotek Aquarius.  I like it very much.  I have a Bryston 14bsst amp, a deHavilland preamp and a Wadia 581. Dead quiet soundstage, sparkling highs and nice bass.  The Isotek runs cool to the touch.  I solid investment for me personally.  I will soon add a couple of streaming/DAC devices to it.