I've tried to converge on a couple of simple medias:
Nepenthes: 1/1/1 - peat/perlite/fine-orchid-bark plastic pots,
top watered occasionally, no tray method.
Tropical Pings - 45/45/10 - vermiculite/perlite/peat. Some people
leave the peat out. plastic pots, tray watering. Since
this media has no food value for plants, I mist the plants
with a weak miracid solution every week or two.
Queensland sundews - live spaghnum. plastic pots. tray method
only for D. adele & D. prolifera. I water schizandra
sparingly.
Heliamphora (recently acquired) - life spaghnum, no tray watering.
tuberous drosera - very sandy peat mixes. maybe 70/30. tray watering
when they're not dormant.
nearly everything else - 50/50 peat/perlite with top dressing of
plain peat for neatness. tray watering.
For seedlings mixes vary, but I try to use straight peat.