I have been using nothing but pure peat for VFTs and Sarracenia for 20 years now.
with a top-dressing of LFS to keep the peat from spashing around in the rain.
I tried other mixes..
tried peat and sand..hated it..turned dense and heavy like cement.
I see no reason to use sand.
tried peat and perlite..hated it.
the perlite is ugly, floats to the top, and offers no benefit that I can see.
also, when I re-pot, I use the "old" peat in gardens, so I dont want the perlite there.
I settled on pure peat with LFS top dressing..its the mix I will use from now on!
works fine..
Only drawback: you need to repot every two years..the peat breaks down..its fine to add to gardens, but not good for the CP's after two years.
but you should probably repot every two years anyway, no matter what mix you use.
Sand is fine, if you want to use it..but its hardly necessary.
Perlite is fine, if you want to use it..but its hardly necessary.
Growing mixes are very personal and subjective..people like different things!
nothing wrong with that, as long as it works for the plants and keeps them healthy.
but if you hear you MUST use perlite, or you must NOT use pure peat..wrong.
someone is confusing opinion with fact.
Scot