Because we did the whole "super high" ceiling thing in the house, we were basically limited to using spray foam insulation in the walls and ceiling. We used closed cell insulation. Hands down, this was the most expensive part of the renovation project. "Everyone" keeps telling us that we will reap benefits in the long run through cheaper utility bills. They better be right.
If you have any interest, the full set of spray foam insulation photos is here.
I will say little here about how the contractor hit us up for additional money on the last day of the job. Perhaps he knew how exhausted we were, and how much we just wanted to be done. My typical go eff yourself atty-tood was nonexistent, and he got what he wanted. He was a nice guy, just not the best business person. Basically, I feel screwed, because he was the low bidder, but ended up costing us the same amount as the highest bidder. What a racket.