Swisstools are heavy duty workhorses. They are durable, well-designed and manufactured, possibly the best multitools on the market. But heavy. The Swisstool Spirits are the same quality but in a lighter weight, more ergonomic package. The best of the best.
I like Leatherman, but the only large multi I have kept is a Swisstool Spirit. All the others, Gerber, SOG, Leatherman, have been good tools but when someone needed one, I gave them away.