I have EDC'ed a Leatherman since the early 90's and have found them to be quality products.

Concerning one-hand opening my original PST is quite loose (I call it worn-in) so that with a flip of the wrist it is easy to open and close with one hand.

It still takes 2 hands to open the bladed inside and often I would draw the tool upside/down or backwards and I would end up opening the file. To correct this I put some red reflective tape on the side which the knife blade is under (for sight and feel).

Now the tool in inserted in my belt sheath, hinge down, blade outward, this allows for the easiest and quickest draw to flip the pliers open or open the blade (works for left handed people also).

I EDC an original Leatherman WAVE at work which is also a good tool (the basic knife blade steel could be better). This one is not as loose as my PST but I can still flip it open/closed with one hand.

I have found the largest size Leathermans to be a little to big/heavy for my EDC, my son now carries my Supertool.

I have been eyeing a new CHARGE TTI (S30V blade steel) but I am having trouble with the $135.00 price tag when I have 4 Leatherman's already, 2 of which I rarely use.

My only experience with Gerber Multi-tools in that my hunting partner carries one. He works with explosives and his employer provided it to him because it has a special tool for working with blasting caps (I think it is like a punch/hole making probe). He likes the tool, but it was free to him so I guess there is not much to complain about that.

Mike