Here are the pics from my trip to Langkawi, Malaysia! I cannot identify the species, as from what I understand the only ones that are supposed to grow here are N. gracilis, N. mirabilis, and N. smilesii.
Here are the mountains the plants inhabit (only at the very tops). To protect the location, I will not say which peak had them, but they are not accessible by any trail, and require an all-day, extremely strenuous hike straight through the brush.
Here's a look, at the very beginning of the hike, up a small stream that marked the end of the very short trail to a swimming hole:
OK, enough setup, let's get to the plants! It's strange, there are no nepenthes whatsoever, then all of the sudden, they're all over the place. It looks like there are two kinds, but I'm not convinced that some aren't just uppers and some lowers (the redder ones). They never appeared on one plant together, and some had red stems, and some green, but still - the green ones all look like uppers, and the reds all like lowers. In any case, here they all are - and these pics all were taken within 20 feet of eachother: