Greetings to all,

I need to purchase a knife that can attach to my PFD for use during emergency situations. Searching through the archives, some posters recommend folding knives (e.g. Gerber E-Z Out Rescue and Spyderco Rescue), some recommend fixed blade knives (e.g. Gerber River Shorty and River Guide) while another recommends a rescue hook (e.g. Benchmade Rescue hook). What are your preferences and why? Thank you in advance for the information.