Anyone with Experience of Mains Purifier?

I’m awaiting delivery of a fanless NUC, which is supplied with standard Switch Mode Power Supply.

IFi Audio offer a mains purifier to reduce noise on such SMPS devices.

Does anyone have experience of using such a mains purifier with their NUC, and on what discernible difference, if any, has it made.

anyone one tried this one from the same company but for the mains side of things?

I tried the Purifier 3 together with a IFI Zen Dac. Could not play any MQA files due to stuttering.
Using an Audioquest Jitterbug now with works fine