Never bought any criterion stuff (or many Blurays in general) besides Seven Samurai, but I figured this sale was a good point to jump in and really get my collection going.
Here's what I've bought so far:
-Videodrome
-Harakiri
-Tragedy of Macbeth
-High and Low (just ordered this tonight)
Likely will get a few out of these as well: Eraserhead, Persona, Blow Out, In the Mood for Love, and Days of Heaven
I'm really impressed with what the transfers and packaging. Like damn. Those main menu screens alone put univeral and warner's to shame. (Speaking of universal, got the Jaws bluray with the criterions. It may not be as slick a package but the quality of the transfer and the supplements are absolutely incredible)