Once the transcoded output is indistinguishable from the original, even at two inches, as this seems to be, then the game is over. DVD2One may be better in quality when measured scientifically (then again, it may not), the point is you can't tell.
It's as if you were having a conversation with Einstein and suddenly, by magic, his intelligence doubled. Would you know?
I'd like to post a screen shot, but my system seems hostile to 'grabs'. The resultant GIF is just black!
I believe that for the vast majority of people most of the new transcoders produce results that are more than good enough. At normal viewing distances and in the middle of an interesting movie, you are simply unaware of fleeting artefacts.
What I'd like to see - and so far as I'm aware no one's done it yet - is a means of reliably dropping titles. I know IC offers this feature, but sometimes it results in the DVD being unplayable. I try to get rid of those annoying copyright warnings, but if they are called direct before the main movie starts and IC has just dropped the VOB without adjusting the IFOs, then the whole thing hangs!
It's on these matters that the developers should be focusing now.