Puritan vs IsoTek vs inakustik

I have used Equitech 2Q with excellent results, both pre & power (200 amp). Benefit for both. Absolutely no power limiting, feels like the opposite. I have measured my power use in the amplifier. Never above 5/6 watts :)  I enjoy classical, chamber, solo instrument, jazz-- and of course older rock :) 

I had the Puritan and now have a PS Audio P15.  The Puritan had a subtle negative effect on my system, I loaned it to a friend and he had the same experience. I ran it for a a couple months and it was a breath of fresh air when I removed it.
 

The effect of the P15 was a subtle improvement across the board. What it gives me is consistent sound any time, day or night. What I call Sunday night sound, now 24/7. I have two direct lines to my breaker box, and pretty clean power to start with I think. For someone living in a noisy power zone, I suspect it would make a significant difference. I ran my power amp through it for a couple months, but switching it directly to the wall was an improvement. Everything else has benefited from the P15. 
 

@zlone    Could you please explain the subtle negative effects the Puritan caused in your system?

@dayglow Could you please explain the subtle negative effects the Puritan caused in your system?

I would have to say that it caused an increase in the noise floor overall, how this affected each component and to what degree, I do not know. I just knew after a couple months that I was not enjoying my system as much, and when I pulled the Puritan out, it became very apparent that its effect was negative. Like the proverbial 'veil being lifted', suddenly everything was crisper and more in focus, with blacker backgrounds.

On a side note, but power related, I just resolved a problem in my system that has been dogging me for six months or so. It just did not seem up to the levels of sound I had come to expect. While fiddling about with some cables, I bumped the power cord coming out of my preamp and its power cycled signaling a bad connection in the plug or with the preamp. I popped off the plug and sure enough, the neutral wire was not well clamped anymore. Who the heck put this piece of crap together! Well it was me. I suspect I stressed it too much at some point and it pulled loose. Anyway, my sound has improved by massive amounts, but what is really noticeable is the blackest background I have ever (not) heard. Does clean and copious amounts of power to a preamp matter, you betcha.

I appreciate the quick reply. Have heard nothing but positive reviews on the Puritan makes you wonder how many opinions were bought.