I like Fastarc C-1. Max sponge thickness is 2.0mm. It is plenty fast for me.
A few years ago Fastarc G-1 went from max sponge thickness of 2.0mm to 2.1 or 2.2mm? I am not sure if I noticed much difference between them.
I have been using Tibhar revolution series lately. And on the packaging, I think max sponge thickness is a range of 2.1-2.2mm? I think we are all splitting hair here. Due to manufacturing variance (as Tibhar's packing suggests) some 2.0mm sponge might be as thick as the max sponge.
Also there is a regulation on how thick the top sheet and the sponge in total can be
yep
Japanese companies actually have a habit of listing the variance, and some times don't even put an exact size, it would be a range.
so, if any one really knows equipment very well, this isn't lame at all.
unless, we are talking about CNT level players where 0.05mm matters (2.05mm vs 2.1mm)
in fact, for boosting, one less than the "max" is preferred (okay, I have said too much haha)