You should look at the Victorinox Ranger - very tool dense for its size and sometimes you need to grind off a little wood/plastic/metal and having a file handy is really good. :thumbup:
Also: Farmer, OHT, Rambler/Manager, Explorer Plus and Cybertool 34.
A lot does depend on what activities you do.
The Cybertool 34 is an incredibly useful urban tool, great with computers and electronic gadgets.
The Ranger has a really good range of tools for camping and for every day life for that matter.
The Rambler or Manager should be on your keyring, I have 2 keyrings and on one is a Manager and on the other is a Rambler. I can't recommend these enough!
The Farmer is just pure class! The blade is a bit thicker and stronger and the awl is better than most.
The Explorer is great if you need a magnifying glass which works amazingly well for something so small.
The OHT has a locking pry tool (which can also be used as a screwdriver and even as a bottle opener I suppose) and a locking blade of a respectable size, it also has a better sized saw than the smaller SAKs have and would be another good camping SAK to carry. I hate serrated blades so I have the NS (non-serrated) version of the OHT.
You definitely need to at least consider these SAKs as well as others, Victorinox make great tools at a very fair price.