I have been looking at Fo.q tape for a while and finally decided to buy. I ordered 1 package of T32 and T102.
Disclaimer: I use many "snake oil tweaks" with a very positive result.
Some of which are:
Cable goop- nano Flo
Spring platforms- Townshend
Heartsound room treatments
Uber expensive power cables- Elrod.
IME the Fo.Q tape is the best value Tweak of the bunch, not the biggest impact, but certainly a significant one!
I covered the top of all the large caps in my amp (16) and was stunned at the overall improvement. I will be doing my preamp next!