For EDC, I love my Victorinox Super Tinker. It has a Phillips blade instead of that confounded cork screw. The only stuff I don't use in the course of every day office work (and on computers) is the hook and rarely the awl. http://www.swissarmy.com/MultiTools/Pages/Product.aspx?category=doityourself&product=53341&

After ruining the side panels on a Victorinox Huntsman while boiling it to clean it after cleaning an elk (My wife replaced that with the Super Tinker for Christmas where I saw Victorinox's warranty policy and got it repaired), I decided that a solid stainless knife would be a good idea for hunting or other dirty situations. Since I loved my good old original Leatherman, which was quite useful in EDC as the computer guy at the office for 5 years, I got the Leatherman Super Tool 200. It had the saw blade, all stainless, so no matter how dirty it gets, or what makes it dirty, it can be easily cleaned, the parts won't melt, the finish won't come off and the blades lock. I also like how it folds pretty compact. http://www.leatherman.com/products/tools/retired-tools/super-tool-200/default.asp

At 9 oz. it's too heavy for my EDC without a wider belt, but it's always in my kits for outdoor and travel. When I travel on business, it's the first thing out of the suitcase.