Looking over the two, I figure it goes two ways:
M. Res per level - Kinda meh at the start, but **** fine at 18. Vice-versa for flat M. Res.
Which would be more beneficial to a general tank rune page?
Flat M-res Quints but per-lvl Glyphs.
I say per level. You don't run into heavy magic damage that early anyway, and you don't have to tank then either.
personally i built a flat magic res book exclusively for galio and i start with 80 mr. which means 40 ap lvl one. thats a really hard hitting "tank"
A fullish glyph flat MR page gave me around 11 MR. Sold it all, got 3-4 MR per level glyphs, and had 12.
Tl;DR MR per level is wonderful.
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