This is an enormously painful book; unlike most of the Vorkosigan books, I remembered significant sections of it with uncomfortable clarity. It's not so a matter of implausibility or coincidence in the action, but just that a lot of the events are agonizing. Even knowing how it would resolve was not enough to buffer against the rawness of it. It's an important book, but I was tempted to skip it just for it being so full of horror. I read it again anyway, and it does have a nicely satisfying denoument, so there's that. I am only giving this one a 5, though. I don't think I'll be reading it again.
Next up is Memory, which I don't particularly recall. I think I'll finish the ninth Aubrey/Maturin novel first, Treason's Harbour, first -- I'm around halfway through it already.