I6 Ravenloft is still in many ways the gold standard, a height of combining aesthetics and usability to which we have not regularly (or ever) achieved since. I have a few quibbles with the module, most notably that the recommended levels on the module are about 2 lower than they should be for the challenge, but in terms of presentation of encounter blocks and the maps and the overall layout of the module, nothing has ever done better.
My choice was I3 Pharaoh. I don't think it's a coincidence that both were written by Tracey and Laura Hickman.
As to boxed text mentioning monsters last - it was standard TSR procedure to do that in more or less every module they ever published.