im starting to wish i had the ability to edit my posts cause i keep thinking of more...
the "best way" to deinterlace a source is to pre-filter it with avisynth...
ADV's SM DVDs are horrid, and has some of the hardest to get rid of interlacing I've seen my last sm video imho ended up looking over filtered because i just couldn't get rid of all the issues with it... however I was working off of the pioneer/geneon dvds of the movies.