The reason why CFH is so fizzy has nothing to do with the low pass filtering at all.
It's so fizzy because the source tone is just fucking terrible.
If your guitars sound like the CFH guitars, you have fucked up badly.
A tone to be avoided for sure.
I ALWAYS prefer a tone that isn't particularly fizzy.
ESPECIALLY in vocal music, fizzy guitars will always be to the detriment of the mix, there is no way around that fact.
Ultimately, it's just like everything in mixing. You need to strike a balance.
You need to focus on the whole mid range of the guitars sounding as good as possible.
The low mids, core mids, higher mid mids, upper mids, it all has to be balanced.
Too much or too little of either region will be to the detriment of the mix.
Make it the main focus to get the BEST tone you can from the source, because the truth is that where you low and high pass the guitars are insignificant details compared to the source.
High passing at 60-130Hz and low passing at 10-13Khz should be fine really.
That said, I'm of the opinion you need to get the best separation between the guitar and bass as possible, so I think it's better to high pass at 100Hz or even higher, and let the bass guitar handle that region.
Sneap tends to high pass at 60Hz IIRC and I think that's one small part of the reason why his mixes tend to not have as good separation in the low end as the very best out there.