Power generator or Power Conditioner?

Nuance is key. For affordability and cost/benefit I go with a Furman with voltage regulation.  Expensive, but keeps voltage within 5 Volts all season round. 

The PS Audio units are much more expensive, tighter voltage, some additional noise, which you may never hear.  

I save my actual generators for my home network and in case I need to run an electric blanket for a couple of nights without power. 

I find it helps to get one of these cheap testers, plug it into your outlet near your audio and watch it for a while.  It will help you see just what the normal state of your power is. 

The best is probably battery powered like a Stromtank.   

I have tried both. I had the Furman Elite PFi-20, and it did a good job and gave me peace of mind that my gear was protected. I also tried the Puritan, and for me, it was a step back. Now I have a PS Audio P15, and this has been the best solution for my system. None of them were huge improvements, I think that I have pretty clean power. What the P15 brought was consistency, my system sounds good 24/7, Sunday night sound all the time. All that said, the biggest step forward in power space was running direct lines for my system.