The -5 weighs a pound. If you need to separate a diesel truck or a mobile home into its component parts with a tool that fits on your belt, it'll get the job done. I love it for what it is, but as a general hiking/camping/outdoor knife, I like the -4 more. It's light to carry and very well balanced and handy. I'd highly recommend it on its own merits, but if you already have something to fill the big knife niche, I'd definitely say the -4 is the way to go.