My first significant knife was a Huntsman, you have one of the best possible options, IMHO, for a SAK. It is fairly light, and just the right size, with the tools you will really need.

Avoid the BIG ones, like the SwissChamp. Too big, too heavy, too bulky, it just isn't worth it. A Huntsman and a non-saw equipped Leatherman, like the Fuse or Kick, or a Climber (or Huntsman- two saws are better than one) and a Supertool or Blast is a better choice. The bodies of the really big ones are just too big to hold onto very well, in my opinion.