I have used a relatively inexpensive 8 outlet Audio Brickwall for quite a few years. I find its filter nicely transparent, while being a good surge protector that is not supposed to limit power. I have upgraded mine over the years with better outlets, a nicer AC plug, and a Shunyata Defender filter added later..... but was surprisingly happy with it from the start.

I used it for my whole setup for quite a while, the computer and DAC plugged into an unswitched receptacle and the rest controlled by the unit's switch, using it for my system switch.

Now I have a nicely made Balanced power supply from a Chinese seller that I modified a little, and it feeding my modified PSAudio P5. Especially the P5 needed some cleaning up for me... too colored and veiled stock, but pretty nice with a specially made cable, good feet, a Furutech IEC inlet, better receptacles, and replacing some slide on connectors with soldered connections. The reason I had to go for the regenerator  was to regulate irregular voltage that notably changed the sound of my Decware.... not horrible, but for a pretty serious tuner, when a volt or two could change the sound, more voltage fuller/darker, and less leaner/more open, and the voltage generally starting high here so tending toward thick, once I figured out what was happening, I was glad to move toward a more stable sound to tune from. Add 1-3 volt swings over days, our power was just a pain for adjusting my system. So I use this arrangement for my main audio components.

These days I am using the Brickwall for my computer, DACs, and other front end things. To me the Brickwall could be a little touch smoother, but is not restrictive or veiled, and has always been the most "not there" sounding for the precious front end to me. I got this quite a few years ago, and I am not sure how the new ones sound, but they look the same, and this has been my experience anyway.

I've used a Brick Wall for years as well, 15 IIRC. I believe, as Jon mentioned, the design is licensed by Zero Surge. Good product.