I am a fan of the Sven also, but it doesn't meet your requirements for a blade that folds into the handle. I have a few of those folders, no idea what brands. What I can tell you is to get a quality brand name. Don't get one of the generic types found on the "camping" wall at the local discount store. Those usually have badly designed teeth, and are made of a soft, thin, material, which tends to bind in the wood, then the whole blade buckles and bends...