I have always had a thing for Cannondale Overland panniers. I used to buy every set I could on the 'bay when I could get them for $40-$50. I've worn out two sets. One was replaced with Cannondale's lifetime warranty. With the other set they told me to eat cake, that they no longer honored their lifetime warranty. I've sold a few sets over the years, had one brand new set that I just put on my Specialized Hardrock Pro Disc stolen with the bike two years ago and now I have two sets left. One is brand spanking new and are hanging on a 1987 Schwinn Cimarron along with a new front set, and new rack trunk. The other set is on my 2009 Giant Seek 2.
I sold a brand new pair of Carradice Super C's for $130 a few years ago. I've always regretted doing that.