Compressing to Rar can save up to 30%? That's cool.Exporting to D8 tapes?Good idea since they really are cheap (compared to miniDV tapes). But I guess I'll go with the DVD solution for the long-lasting advantage.

I guess in the end, there are no good compression that can really be used for decent re-editing.

Again, I would like to say thank you for all of you who have given me good suggestions. They were all useful to me. Thank's guys!