Oh, sorry vbangle you must have posted while I was typing my previous post, so I didn't notice yours.

Yeah, I totally get it and I wouldn't really mind whatever size they'd be, it's just that I like to put films I care about on disc because I like to be able to put them in nice boxes and stuff, otherwise I also have the majority of my MKVs on my HDD. But I don't know about usenet, but the majority of 720p releases I see on like rapidshare and torrent are usually either 2.18GB, 4.3GB, 6.5GB or 7.9GB to fit on DVDs, I guess it's kind of an established standard more than anything else.