There is an old saying that my only mentor told me quite frequently:
"To know what it means to be something else, you can't learn only by asking. You need to experience it, for yourself, for a time, and feel things through those eyes."
For starters, the two most common vampires/Vampyres (however one prefers to spell or pronounce) that are known are, yes, Sanguine and psychic/"psy/psi".
However, the variations "psy" and "psi", in all technicality, hold two different meanings.
Sanguine Vampyres, obviously having the need to drink blood to sustain their own health-
Then there is the psychic/"psy" Vampyres, who feed on the psychic/mental energy of those around them.
The third, however, which many people tend to forget about, is very similar to the psychic Vampyre, but is still just as different in comparison as the Sanguine. This is the Psionic Vampyre. The Psionic Vampyre feeds on energy, just like the psychic, but the energy is of a different kind - Spiritual energy. In other words, the energy generated by the Soul of an individual. The Psionic Vampyre is also the most dangerous kind, because they can drain your very life from you, and the more skilled or powerful they are, the less likely it is that they even need to make physical contact to do so. Some can even feed from a distance. But the likelihood that you will meet a solely Psionic Vampyre is so slim that it is next to nonexistent.
Most other Vampyres, like myself, that I've met, have many of the same characteristics that I possess--
heightened senses (smell, sight, hearing, and some of them are also hyper-sensitive to touch), greater strength than they appear to have, and some (myself, for example) have natural night-vision. The list goes on, but in general, many Vampyres possess many of the same characteristics.
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There is no real solid description of what makes a Vampyre a Vampyre, since just like the Mundane, each of us is different from the next. But the primary thing that has been pointed out about each of us is that we need to 'feed'/consume the life-force energy of another thing or person, to sustain our own (be it to sustain mental health, physical, or otherwise.) Because of the varying degrees of capability, not many people can really pinpoint how much a particular Vampyre needs to 'feed' to sustain his/herself. But what is most commonly known (mostly in literature) is that the older we get, the more we need to sustain our health, and thus, the more we 'feed', or the more we need do so. Speaking from my own experience, this is very true, however, as I need to drink blood almost every day, or I will suffer severe repercussions.
That I have noticed, there are not really any advantages or disadvantages to being any kind of Vampyre. But this is only because unlike most, I'm not a singular "type/breed" (I happen to be what my old friends call a "tribrid".) I'm Sanguinarian, "psy", and Psionic. I will say, however, that the one disadvantage to being a Psionic Vampyre is that a Psionic can't eat or drink like "normal" people, because for them, it is a different kind of "life", as a whole. Normal food or beverages can be lethal for a person who is a Psionic Vampyre, though in which ways, again, varies by the individual. In my case, there are many foods and liquids, including regular water of any kind and most vegetables and even meats that I can't consume.
