If you're looking for a keychain size, I strongly recommend the Squirt P4. The pliers work surprisingly well. I had a Swiss-Tech Micro-Plus as well and as far as I'm concerned the Squirt pliers are superior. The Swiss-Tech pliers are very wide and thus difficult to get into tight spots. It has extra small slotted, medium slotted, and small flat phillips screwdrivers. The screwdrivers on the Swss-Tech didn't lock or snap into place it all which makes them far from odeal. It also has a nice double-sided file with single-cut on one side and double-cut on the other. Not just a nail file. On top of all of that you get a blade that can be a backup for your folder and an awl. I don't have much use for the awl but I know for some it's desirable. I like the Squirt P4 so much that it could even work (and has in the past) as my sole EDC multi-tool. It has what I consider to be the four essentials: a knife, screwdrivers, pliers, and file. Still, the Swiss-Tech screwdrivers (especially the phillips) are made much more like conventional screwdrivers. They're just not easy to use. You may want to pick up a Swiss-Tech to try it out; they are cheap. If you're not happy with it and like the extra tools that the Squirt P4 has, get one of those.
Edit: forgot to mention that the Squirt has a bottle opener as part of the medium slotted screwdriver. This does take away from the strength of the screwdriver, though.