I am planning on getting either a BM 550 or 551, but am having trouble deciding on which one. (Don't tell me to get both, because I might be tempted to do it.) I like the shape of the drop point blade of the 551. Is the modified sheep's foot blade of the 550 a more specialized blade? I am not that familiar with that type of design. Wouldn't the 551 drop point blade be more useful for general cutting tasks than the sheep's foot? I have no preference regarding the thumb stud or opening hole. The 550 does look a little cooler. Which of these knives would be more useful for misc cutting jobs as well as defensive use? Thanks. 
