I will ty and give you a hand on this if I can. I own the Swisstool RS and it is by far the best multitool I have ever owned, and it is my fifth or sixth.

1) Supertool 200 or SwissTool? Why? Personal choice. They are both good tools, although I prefer the Swisstool over the ST200 as each of the individual blades are independant of each other, so there is no clumping. And all blades lock and you dont have to open the pliers to get at the tools.

2) LM ST200 -- does its blades hurt?
I dont know what you mean with this one

3) Warranty coverage -- LM or Victorinox? Both have good warranty coverage. Victorinox will replace your tool if you break it, and I sure that LM will as well.

4) Differences (other than "more features") of SwissTool RS and X?
The RS has a sheepsfoot, serrated blae and scissors, but the X has a file instead of the serrated blade. Otherwise they have the same tools as the stock swisstool

5) LMST200 -- does it wobble?
From what I have seen on my friends, it doesnt wobble. Once the tools are extended, they stay in place and dont move.

6) Gerber 800 and how it stacks up to the LMST200 and ST... any strength preferences?
I have no clue. I dont like gerber's becuase I havent seen any of the improvements I would like to see in them since the original.

I hope this helps. I am very biased to the Swisstool, and there are some in this forum that are biased to the other tools out there. What is boils down to is what you want out of a tool and what you are comfortable carrying.

Good Luck!

Garrett