I was down sick last weekend, and took this into the bedroom with me, and was blown away again.
I was also amazed reading the plots. I knew they worked "Marvel Style" (I plot, you draw, then I dialogue), but I had no idea how much latitude Giffen really had in breakdown and layout. By #294 Paul wasn't even breaking it down by page anymore. I'm sure there was a lot of phone or in-person collaboration, but that was still a real eye-opener that Giffen crafted that much of the story.