The voodoo labs pp3 is a switch mode design similar to the Strymon, cioks, Truetone supplies, so no problem with putting pedals too close to the supply like the older voodoo labs supplies.
I am a huge fan of the cioks dc7 and coiks 4 expansions. I have tube Kingsley pedals and the cioks powers them without an issue. On the Truetone cs7, I was able to power 1 Kingsley, but had issues powering 2. Probably not a problem for most people, but I love on the cioks dc7 how you can switch any output to 9v, 12v, 15v, or 18v. The Truetone cs7 is a good supply, no noise, just out grew it.
I think if you are going voodoo labs pp3, Strymon, cioks, or Truetone then to me those are the top 4. Glad to see voodoo labs finally get back in the game with the pp3, their old supplies were great, just using old technology and lacking the power of the newer switch mode supplies.