Most of the motivation behind the "move" from 440v to S30v was due to the reduced vanadium in S30v. 440v was hell on tooling because of it's anti-wear properties. Chris Reeve touches on this in the excellent mp3 interview that can still be found over at woodsmonkey.com. Do yourself a favor and download that podcast. Lots of insight there. Anyhoo, I get the feeling that S30v wasn't intro'd because it was the best thing for the end user, I get the feeling it was intro'd because it was easier on manufacturing equipment while retaining many of the same qualities (although at reduced levels) that 440v had. Basically, the end user took it in the shorts and the manufacturer gets the luxury of purchasing fewer belts, stones, and mill bits. That's the lowdown I come away with by reading between the lines. Listen to the interview and see what you think.
All that said, I HATED 440v because of the nasty wire edge during sharpening. But this was after the "sneaky" switch to a lower hardness due to chipping fears. Very early 440v blades had higher hardness and was a lot easier to sharpen. But after an unfavorable article in a largely circulated knife magazine, the manufacurers (spyderco basically) scrambled for cover and reduced their hardness down to the mid fifties. This resulted in an almost comical wire edge during sharpening that couldn't be gotten rid of under ANY circumstances. If you sharpened the knife, it had a wire edge. Period. No exceptions. If you can get hold of an EARLY 440v Military or Starmate, by all means BUY IT. At any cost. THAT was how a blade should be made. Sharpenability, edge holding, toughness. It had it all. The move to a softer 440v, then eventually the move to S30v were GIANT leaps backwards from the early 440v.
It's sort of like Pepsi telling you that corn syrup is "the same" as sugar in their testing. You know better, but that's what they say while corn is 3.50 a bushel. Once corn reaches 11.00 and sugar is cheaper, watch 'em roll out the "throwback" flavor. Er, I thought there was no difference. (cue retarted slobbering noises and involuntary muscle spasms). :jerkit:
Welcome to the bean-counting division of customer relations. Cheers...