whats the size difference from the A-1? I just sold my A-1, It was a great knife, but I couldn't really feel it..if yah know what I mean...my F-1 is one of my favorite knives (LIGHT! SHARP! damn near perfect) but one with a 5" blade would be fun to own. After 5" is reached I usually think I should go 7"+ to get the max chopping power.