Seeking advice on power conditioners/regenerators

Here's the thing. What are the possible sources of noise you are trying to clean up? If you live in an urban area or near any commercial or industrial facilities, you're likely to need some cleanup. If the circuit to which you power your system is shared with appliances, dimmers, florescent lights, etc., you're gonna need conditioning. If your system is composed of mid-level components that don't properly shield the noise they generate internally, you'll need help. Finally, if your speakers are high sensitivity speakers, you'll likely hear some of the noise. BUT.....If you don't have any of the above issues, and can't hear any noise in the black parts of music, you'll likely be wasting money and possibly adding problems by adding conditioners or regenerators. Don't believe the hype about improvements on problems you don't have.

J.Chip

Like anything else, you need to try one in your system. A friend who's also a dealer (audio, that is) once brought over one of the more expensive PSA regeneration units and it had no effect, whatsoever. I'd second the suggestion to try one from an online vendor that offers a free, in-home trial (free, except for return shipping), if you cannot borrow one. 
Keep in mind that Music Direct may penalize you in future if you buy something and return it. In my experience, Audio Advisor is more forgiving in this regard. 

I doubt that there is any place with really clean power.  The power lines pick up all sorts of RFI and noise from neighbors sharing the same trunk feed.  A typical home has its own share of noise sources--electronic devices, wi-fi, LED lights, etc.  It does not hurt to do some form of power conditioning.  

I use Isotek Titan and EVO 3 Sigma conditioners.  These are quite expensive.  But, at a demonstration at a local dealership, I heard their $500 power bar with conditioning, and it delivered a substantial proportion of what their much more expensive conditioners deliver.  The power bar is quite a bargain.

The best way to determine if a PP will work for you is demo one from PS Audio. They have a 30 day trial. Return it if you don't hear a difference.

A dedicated line if you don't already have one, is relatively inexpensive. I'd look into that first. 

I have my entire setup on a PP(including a PL HP). Does what it's designed to do. A used P5/10 can be found for cheap.