Your opinions and eperience mirror mine exactly, except that I have had no corrosion problems with D2.

That little S90V blade is not ezactly a knife, more like a tool. I fear it is very brittle. Absolutely no flex to it.

There are some very respectable makers still working in 440C, like Tom Mayo. It's gotten a bad rap, but I'd be really careful what/who/where its from.