I voted for the basic 4. Small enough to tackle any game processing, uncoated and has enough backbone you could baton with it if needed. Anything smaller then 4 compromises utility I think. I also think the 4" length lends itself to a better mental state in the woods for most as in they feel safer with a weapon on them. I also choose it over the Scrapmax because I dont think anyone in a survival situation wants to try and sharpen Elmax in the woods, others motivation may very.