Miniatures Handbook...
The Sudden metamagic feats are no addition to my game - we've been allowing a once-a-day use of metamagic feats for a while (as originally suggested in Dragon mag a while back) - still can't exceed the level limits, but you don't 'pay' extra for that one use. Just the standard feats work fine for me.
I liked the swift spell idea - and I'm glad it's incorporated in the XPH, but haven't opened the extra spells up for general use (there are already too many choices with the various splats and FR sources).
I do use the Revivify spell, though it works like Raise Dead (back to Character Level in hp), costs the same as Raise Dead and is 6th-level IMC. I didn't like that this spell (nice idea) brings you back, but you're still helpless and in need of further medic attention - at least on low positive hp you can glug a potion/run away/protect yourself.
The PrC and monsters aren't vastly interesting to me.
Oh, and the mass battle 'rules', which were my primary reason for buying the book...what a waste of pages. I WISH I'd read a review first. I won't rant here (though I really want to).
Overall then, I use a modified Revivify.