♛Guilty of being anaemic? That’s not necessarily under your control. I’m not a doctor, and I don’t study blood like our scientific brethren do… I know what I like to drink, though, and for me, the physicality of the blood is merely the carrier for the moment that I’m locked to my victim, to take what I really require, which is their essence, their soul. I don’t discriminate based on taste; I would just prefer it to be living! (Dead blood is not poisonous, but it’s so so distasteful.)
I’m sure that I have tasted this already, apparently anaemia affects a quarter of the population. One of the causes of it is blood loss, so I’m sure I’ve been the cause of it for some of my Little Drink victims *grins* Oh well…

Other causes of anaemia are dietery, genetic or infections, and as far as I know, whatever the engine is that makes me what I am defends me perfectly from all of these. I’ve never had an illness in that sense. It’s physical food and drink that I can’t handle, but that just comes back the way it came. Very unattractive when that has happened. I can take little sips of real drinks, yes, but none of it has ever had much taste to me.
I won’t lie, I love trying new flavors of blood, Little Drinks from partygoers, and I have a taste for bourbon by proxy now. Drugs? Not as much, as I’m wary of allowing myself into that far of an altered state of mind. Potheads, yes, when I’m in the mood for a gentle kind of high.
As for your question though, I do notice variation in the taste and texture of different blood types, but I usually don’t know the reason. Something a little flatter about blood with less red blood cells or smaller red blood cells, perhaps the closest comparison would be champagne that has gone a little flat, but all mortal blood is still preferable to animal blood. There’s more in it that we need than the physical substance; we need the soul as well.
Although I have met many animals with much more soul than some of the evildoers I have to get involved with, human souls are just more nutritious for us, for whatever reason. Even Gabrielle has confessed to me that she ends up needing to hunt indigenous tribes every so often on her travels, to supplement her usual non-human intake.