Excellent stuff you got here.
I'm a sucker for properly tagged tracks as well. Personally, I use
MusicBrainz, but it's more of a personal preference. If anything, it makes it look all the sweeter.
One other thing I'd mention while in the Zune software. When you've got one album that the software has (for one reason or another) split into two, skip the hassle of tag editing. Look and see which of the two albums has the most complete/correct data and drag the second on top of it. This causes the Zune software to merge the two albums and give the second album (with the incomplete tags) the characteistics of the first.
I assume you're looking for a sticky? It deserves one, though for some reason, I can't decide if this is the correct section.