I'd go with Realms for both, although I like the tattoos in the PsiHB. I'm still poking through most of my other sources—I just don't have the time to read and digest new supplements, so I may find something else I like better, but for now, this is where I'm at.
How (and in which product) does the FR deal with rune magic? I've got a Norse flavored campaign I'm working on and I'd be curious to see how it's handled there..
Tatoo -- use FR (the one in Lords of Darkness where tatoos are trated as magic items on the body and a craft tatoo feat needed for it, etc.). I like it compared to the one or two others I have seen (for my purposes anyway).
rune magic -- has not come up (yet) in the game. But, as I have only seen one (the one in FRCS), I don't have anything to compare it to.