My favorite is the RS model. I don't like the SwissTool files, so that is might be why... The belt cutter is fantastic, one of the best serrated blades, ever! Oh, and my favorite plier head is the '98 design. I like the blunt pliers (for certain tasks) and how there is a hard wire cutter and a regular. I dislike the current design because it has wire cutters, soft wire cutters, and hard wire cutters. I think that's stupid because the wire cutters are REALLY short because of soft wire cutter!