not sure if i can add anything of value to this very old discussion. my understanding of metallurgy is very limited, but what I have is experience using and sharpening different blade steels. My experience with VG-1 comes from owning and using Cold Steel knives that have it, and for the most part, I'm not a huge fan of the steel. Im basing that opinion mostly on the performance of the Mini Pendleton hunter. If you don't know it, its a compact edc type fixed blade that has an over all length of about 6.75". I love the look and feel of the knife, but the design may not be a good pair with VG1. Its a simple drop point blade with a full flat grind, and about 3mm thick at the spine. Its not a very broad blade, so it does not taper down to a very fine edge, but its not super thick either. To get down to it, It just doesn't hold a very sharp edge for long. I dont know if its design or grain structure, but it seems to hold a working edge OK, not great either. They have recently changed the blade steel for the particular model; now its offered in AUS10, which has been pretty good to me. I do plan to buy that version, so I guess I will find out if its the steel or just the blade geometry that has been giving me issues. I really do love the knife, but there are so many other cheaper knives that I own that seem to take an edge and hold it longer. I will make sure to post my findings as soon as I have a chance to do some tests to compare the two different steels on the same knife. Thanks for all of the informative comments.