Hi Ken,
Sorry for the late input, but I've tried a few of these boutique fuses and didn't get much thrill from them. Ok, maybe better ins some ways but altered the sonics somewhat too. In general I think the ceramic body standard fuses are a bit cleaner than the glass body types, and a ceramic fuse with a band of antii-vibration magic on it and the caps treated with the Jena Labs contact enhancer did far more than the boutique fuses... and you can do a lot of fuses and other things for the money for one bottle of AVM and the contact enhancer from Jena Labs.
BTW, the contact enhancer is non-conductive and is the only thing I use anymore (except deox it for cleaning) and works great on tube pins with no danger of shorting out, dripping inside, etc. In fact, a drop in the end of a usb cable connector had a very nice effect -- do that with any other conductive contact enhancer and you can pretty much forget about using that cable again.
So, ceeramic fuse, AVM and JL contact enhancer and it's about as good as it gets, and no worries shorting thing out.
HTH,
Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)