I'll be very hesitant to spend $100 on the folder. For me the pinnacle of the folder knife design is the Opinel knife. They've been around for more then a century, and their twist lock design is the most secure and simple in the world IMHO.
One can have a very good folder with the carbon steel blade for around $12. I personally carry Opinel#8 carbon blade.
http://www.knifecenter.com/kc_new/store_detail.html?s=OP8
Good one! You had me going for a bit. Too much caffeine for me today, I guess. Well played.