I have the Squirt, multiple Juice's, Skeletool, Signal, and a Ti Charge.. at least in the LM lineup. My most used (for going on around 20 years) is the Juice S2. However, I generally don't use it for nuts and bolts, so the small pliers works out fine. I use it for small jobs related to property management. The Charge was just too bulky for only using a couple tools, and the one handed openning blades made it feel weird for me when doing a lot of work with the screwdrivers and pliers.
My friend works on semi's, drag racers, etc. He likes the Wave. However, he usually uses the Gerber Suspension (the old version they still sell at Menards, Not the new version). I asked him once why he used the Gerber over the LM, and he said he liked the lesser weight and spring pliers on the Gerber. I might pickup a Wave+, but haven't felt like spending the money since my Juice does everything I want it to do (I carry a seperate folding knife).
If you don't mind not being able to open one handed, one MT I was impressed with was the Vic Spirit... although I wish I got the Spirit X for the plain edge blade. Beside that, the only other gripe I have is that the metal used for the handles is a little thinner than I'd like, so there's a little flex if you are holding something with the pliers and twisting hard. I've also thought about picking up a Rebar because I like the size and weight of the package, but I use the scissor on my Juice enough that I don't want an increase in size while losing a tool I commonly use.