Aside from the Micra on my keychain, the one I carry most is the Leatherman Sideclip, because of the clip, its relatively small size, and the fact that I usually have the Micra scissors with me.
I like the design of the Wave, but I find it too thick and heavy for pocket carry, and I don't want to use a belt pouch. Also, I don't think much of the knife blade on it. However, the array of tools is great. If you want one comprehensive tool, this is the one. I also like that there's now a tool adapter for it.
The Pulse is thinner and lighter than the Wave. A very nice solid design, good for everyday "in town" carry, loose in a pocket. Good selection of tools, including scissors and file (and a ruler for kuma575). No saw, however, which makes it less suitable for the wilderness. It took me a while to get used to the locks, but I like them now.
I have a SuperTool in my bugout bag. It has the best array of tools for the outdoors, including a saw, an awl, and a serrated blade. No scissors, tough. I too am bothered by the handle bite when squeezing hard on the pliers. I'll probably buy a new one when the modified version comes out.
I have a SpyderWrench that I carry sometimes, mostly because the clip makes it easy. I think it's a marvelous design, but I don't find myself using it much. I find the needle-nosed pliers on the Leathermen more useful, and I've hardly ever used the crescent wrench. Also, disassembling it to get to the bits is rather annoying. It's biggest plus is that it has a real Spyderco blade. If I wasn't going to carry a separate folder, I'd probably go with the Spyderwrench.