Palmer PLI-05 Isolation Box

I got the Palmer PLI-05 to compare with the Radial SB-6 and Behringer HD400 for the purpose of removing extra noise from my pedalboard and amp setup. I am using a HX Effects in 4CM which is already notorious for adding some hiss but also ran into an issue of ground loop buzz in the FX loop of my amp (a modded Marshall). I wish the Palmer also had an option to change polarity of the other channel if needed and it would be bonus to be able to lift the ground on individual channels but nevertheless the isolator works fine for my use. Out of the three options it was the only one that did not show a significant drop in level and I could not really hear any tone loss to worry about. For my purposes the Palmer is the winner.