If you can afford it this is supposed to be a good one http://www.amazon.co.uk/70-443-70-450-Microsoft-Optimization-Infrastructure/dp/0470183748/ref=sr_1_4?ie=UTF8&qid=1336034065&sr=8-4 granted its for the MCITP but the majority of the concepts would be the same.

I'm waiting on the Tom Carpenter book to turn up but the pocket consultant looked like a good one while I had access to it while I overtook a role from a contractor.

I think the issue with me is that I went into 70-432 a bit smug for one of a better word, as my main tasks have been administration focused for the past 5 years so I thought I knew it. The things I slipped up on the most where security and high availability, but I know where I lack in HA and thats with replication as I hadn't used that piece of tech before.