I have been looking closely at the ESEE 3 which apparently only comes with a plastic or nylon sheath. Plastic molded sheaths are fine for some uses but, I want something more durable and tougher than I expect a plastic sheath to be. If I am wrong about the ESSE 3 sheaths, please school me! 
I am not dead set on the ESEE 3 over all others but, I want something reasonably thin with either a flat or high saber grind so it isn't too heavy and a thin edge that is a wickedly sharp and a great cutter, not a pry bar that cuts too. I'm not an operator on a two-way range or a hardcore survivalist/prepper so, a thick heavy 3~4" knife is a no-go me. I looked at the OKC RAT 3 but, it looks a little thick edged to me. I want to keep the knife and sheath price around $100 but, that isn't a hard never to exceed price point. Since I get can get a 'knife only' ESSE 3 for ~$70, my other option is to buy that and get a custom Kydex sheath from someone.
So, what knives should I consider besides the ESEE 3? If I get an ESEE 3, what sheath makers should I consider?
TIA,
Sid

I am not dead set on the ESEE 3 over all others but, I want something reasonably thin with either a flat or high saber grind so it isn't too heavy and a thin edge that is a wickedly sharp and a great cutter, not a pry bar that cuts too. I'm not an operator on a two-way range or a hardcore survivalist/prepper so, a thick heavy 3~4" knife is a no-go me. I looked at the OKC RAT 3 but, it looks a little thick edged to me. I want to keep the knife and sheath price around $100 but, that isn't a hard never to exceed price point. Since I get can get a 'knife only' ESSE 3 for ~$70, my other option is to buy that and get a custom Kydex sheath from someone.
So, what knives should I consider besides the ESEE 3? If I get an ESEE 3, what sheath makers should I consider?
TIA,
Sid