I still have a few Nepenthes growing in mixes containing turface, but what I found after growing dozens of them for a year so is that those planted in mixes containing a decent amount of turface had formed hardly any roots - in fact, they were severely stunted. It was somewhat shocking to the point where I've decided not to incorporate it in with that genus at all. However, it works fine with Sarracenia and Heliamphora, both of which have a similar root morphology.
And similarly with orchid bark, I still use this one on occasion, but there has been some credible evidence as of late that it may promote pathogen growth. If you keep your plants fairly dry or repot frequently, it may not matter.
Some of the simpler mixes have often proven to be the best, such as perlite or pumice mixed with sphagnum moss, or simply straight sphagnum for smaller plants. I've also used kanuma with a few species and it has proven to work quite well, as can be seen by the noticeably longer root hairs on plants growing in it (although this could also be the result of the sterility of this media). I've even used soil collected in Southern Oregon for some species found in ultramafic environments, and this too has been working quite well. Lots of opportunities to experiment, I suppose.
I guess I should wrap this up by saying the common forms of N. maxima will probably grow in anything that doesn't pose an immediate harm to the plant!