Criterion used to be a premier laserdisc label. I don't think they're tied to any particular format. In fact I think Criterion fans would benefit most from the high-def formats, just like they do now with dvd.
keating, I do know what you mean -- it's hard to think about spending again for our beloved Criterions. Come to think of it, maybe I should stop buying them...
...back to topic...I'm an R3 newbie myself, and only recently started buying R3s, at mall "sales." Maybe one in four that I got is of acceptable quality. Maybe I should stop buying at these "sales" too...