Leatherman Wave (pre-2004)
May I ask why the pre-2004 caviot? The Wave I have is indeed pre-2004, it was bought when the Wave first came out. But I had considered buying a newer Wave as a second tool, mostly for the ability to look the tools so they don't fold while in use (a capability that the original Wave lacks).
Are there problems with the newer Waves?
I own both a pre-'04 Wave and a post-'04 Wave, and I like them both. My New Wave (which is what Leatherman calls it) lives in a sheath with a flashlight and a Leatherman bit set that I take with me when anticipating the need. The pre-'04 Wave lives in my laptop bag for the IT work with which I earn my daily bread.
The post-'04 Wave has larger knife blades, all locking tools, different scissors, and trades in the screwdriver bits for a socket that fits Leatherman's proprietary flat reversible screwdriver bits. It comes with one of those bits (for two kinds of driver); there's a bit set available for purchase that works with a number of different fasteners.
The pre-'04 Wave makes more sense to me for my laptop bag because it's lighter than the the New Wave, and because I'm already carrying a screwdriver with bits. The old-school screwdriver bits on the multitool are better, sometimes, for reaching recessed screws than bits that go in a socket.