I have spent a LOT of time on the quest for the perfect Swiss Army Knife for me. I would suggest that you check out the Farmer, Electrician Plus, Explorer and Trekker (You already have good one hand opening folders). The vintage Champion is a little smaller than the Swisschamp but still gives you must of the tools. Farmers can be had for less than $20 new online lots of places. Felinevet is an excellant source for lightly used Victorinox and Wenger knives.
http://felinevet.sosakonline.com/index.php?option=com_frontpage&Itemid=1
If you aren't worried about phillips screws or opening cans, the Electrician Plus with a clip is a very handy knife. This one rides in my Fatboy every day of the world.
I couldn't find exactly what I wanted, so I had Scibeer (aka Bill Evans ) to build me up a few customs.
Originally I thought that a One Hand Trekker with scissors and a corkscrew would be perfect. It gets to be a bit of a chunk to sit on all day long at a desk, and I don't want to wear a pouch on my belt, so it doesn't get carried much on a daily basis anymore.
Then I decided that was too big, and had him make me a 84mm Drunken Lumberjack.
Then I decided that I really wanted a metal file, scissors and inline screwdriver, so I had him build me an Abrasive Yo-Man. I carry this knife everyday in my pocket. It is perfect for what I do.
I also had him make me a Farmer with a small blade and scissors instead of a saw. I like it, but find that I don't carry it as much as I had thought that I would. It isn't that much smaller than the Ab-YoMan to be worth giving up the extra tools.
I him build a custom Farmer for a friend of mine with a small blade instead of the awl and a pocket clip.