Well, if you like 5160 for a sword, 3V is supposed to be much tougher, and yet also holds a much better edge. So it's an all-around upgrade, although it's pricy. I don't want to get too much into steel choice though. I don't know if Darrin can even do a comparable job heat treating 3V as he does with 5160, so it may be a moot point anyways. It's a bit of a balance, and I think there are good reasons to choose a variety of different steels. I'm looking forward to trying 3V, and conveniently, I can buy it from Aldo, while S7 I cannot. I generally tend to think that good toughness and good wear resistance is better than great toughness and low wear resistance. I don't care how tough a blade is; if it doesn't hold an edge, it's little better than a crowbar in my book. If Darrin can do a good job on the 3V, which I expect he will be able to, it's going to be a fine blade. If not, I'll just stick to 5160, because it does what I want to, and I know that Darrin does a very fine job on 5160.