I have extensieve experience with Telos and several other power conditioning products and tweaks, not Puron though. And will share some thoughts and findings.
I have several of the Telos QNR 5.1, the Macro-N and the Mini-Q.
The QNR 5.1 is a wonderful unit. The QNR is not available anymore, I believe it is because of shortage in supplier chain. But good thing is that Telos is working on a new version, according to info I got from Telos this new unit is planned for next year. I dont know if older version can be upgraded to the new one.
The Mini-Q is said to be 70% of the QNR. Telos says that on their web site, and I saw some mentioned it here in this thread. In my findings that is an exaggeration, more 40-50%. But the Maco-N could be around 70% according I think.
What is good with the Mini-Q is that you dont need an extra power cable.
The Macro-N and especially the QNR is very sensitive to power cords. I have ended up with power cords for them costing the same or more as the unit itself, and it has been worth it. For exampe I use Ansuz P2, A2 and even C2 power cords on the QNR and that elevates the performance into the stratosphere. For the Macro-N I use Nordost Heimdall2 with figure 8 connector. I have tried less expensive cables from Audioquest and Furutech but that decreases the performance.
Since I bought a lot of Telos gear during the pandemic, I have upgraded with other products that makes everything better. I believe in mixing different power conditioning gear as they compliment each other. For example I also use products from Add Powr, Akiko, Ansuz, Nordost, Vortex, Kemp and High Fidelity (unfortunately now out of business).