I've had two f1 and A1's for quite some time, one of each being a custom, and recently bought an S1. In my opinion, the stock S1 (w/kydex sheath) is THE best compromise all-purpose knife in the business...for many reasons. Sure, it only marginal as a small utility knife and as a chopper, but if I could only carry one survival knife with me for an extended multiday backpack trip, the S1 would be it without doubt. I also have many Bark River and Busse knives to compare them to....which I'll soon be selling. Just not that impressed with them for the price.