Best compressing program?

i remember reading a post some time ago and a moderator reccommended a certain program that compress a 9.4 to a 4.7 and it uses a type of variable ratio where the low quality data is hidden. its not dvd2one, i cant remember what the name of it was or where the post is. its supposed to do a real excellent job but i think they said it scans the disc for 20 or so minutes. anyone have any idea what im talking about?

DVD Shrink, CloneDVD …?

no it wasnt that… jeez its on the tip of my tongue, if i here the name ill remember

That really does sound like DVD Shrink (the whole scans a disc for 20mins). Or perhaps you mean DVD X Copy?

Weshy.

ill try shrink, thanks