Well, I don't have that many Mac's to replicate your conditions but I should say that compared to windows explorer, Finder crashing is not really as annoying or as often. However my only gripe about it is that it handles FTP poorly. Maybe it was the site I was connecting to, but then again Finder just beach-balled on me for a good 20 secs or so. Everything else worked though so it was not as if productivity went down the drain totally.