Add me into the camp of those that like Downer - it's the first thing I check out when I get a new issue of Dungeon. I love the style, both in terms of the art and the plot.
The only problem I have is that I didn't get to start it from the beginning (and therefore can't do the "Downer Challenge"), and am left picking up the pieces.
If a compilation of some sort ever becomes available (whether at Kyle's home page or what have you), I'd be very happy.