I sold my 6" Zytel a while back because my buddy wanted it and I was thinking of getting the aluminum model. I had not seen or handled one close up before and I was unprepared for this monster! It dwarfs the zytel! I do really like it though, you can cut or bludgeon things with it! I was looking for the Japanese Version but gave up and got the Taiwan, quality is excellent and I like the corrosion resistance of the AUS8 Japanese Steel. You would think the 6" is only slightly bigger than the 4" but it is easily twice as large! I do love my TiLites, especially the VG-1 Blue Anodized Model. I am EDC'ing my new 6" for my walk each morning to change up from my fixed bade ones I usually carry. Any TiLite lovers out there?