Here in down-under land, the Australian Army recently had to make just this decision. My understanding is that the tested the Swisstool, the Leatherman Super Tool 200 and the SOG Power Tool. If newspaper reports are correct, they eventually procured 10000 Swisstools for our troops, specifically for issue to the East Timor Interfet contingent.
I personally own the Swisstool (I think it's called the RS version), the Leatherman Wave (20th Anniversary version), the Juice S2, and the original PST. I have also at one time owned the Pulse and the Juice Pro but gave them away to family because they didn't suit my use and didn't "grab me". However, I loved them all and they were all well built.
The differences and choice of use really come down to your intended use. I'm not going to use my S2 to rebuild the engine in my car or to build a house. I am not a tradesman and work in an many office type environments so none of my tools have been subjected to hard use so far. The most used is the S2. It is the lightest and is carried easily every day at the office. It is also the safest to carry bearing in mind Australian knife laws (has a small non-locking blade which need two hands to operate - mind you Australian knife carry laws are crazy and I can assure you that in a self defence situation I reckon that there are a lot more things I would use in my environment before I would resort to using any multitool - sorry got off track. ). The S2 also carries the tools used most in my office environment; the knife (for attacking oranges, opening cartons etc.), the scissors (my job requires me to work in many geographical sites so it is handy to carry my own), the screwdrivers (especially the smallest one, it has saved the day more than once with the screws in my glasses - even the smallest Swisstool screwdriver as provided is too big for this job), and the pliars.
Why spend so much time talking about the S2 in a thread comparing the Swisstool and the Super Tool 200; well I recommend you check both out thoroughly and try to handle both (even if only in a shop) before buying. I don't own the Super Tool but I bet it is superb. It just comes down to personal use and personal preference. I don't believe either is better than the other. The Swisstool is the toughest I own and is carried in my car all the time and is definitely the one for hard use. It is a beautifully built multi-tool. I love the locking blades and how easy it is to access the tools without opening the pliers. However it is not my favourite. Neither is the S2. My favourite is the Wave. It probably comes down to the one handed locking blades and the overall tools carried and the uses I have. I carry it whenever I can, though not in the office environment. I have also got to an age where I no longer try to analyse every decision I make. I love the Wave cause I do, that's me. I recommend you handle both and choose the same way.
