Ended up watching the new clip tonight too, along with the other two previous clips, all on my HDTV this time. I'm a little tired, and I'll probably watch these again tomorrow when I'm more awake, but as it stands now here's my 2 cents:
I'm sure I'm in the minority when I say I actually like the first 720p version (post 1829). It simply astounds me that such clarity can come from the GOUT, and of the three samples thus far, it's the one that most looks like a blu-ray image to my mind. Although people's faces may be a bit too smooth (i.e., "plasticy") in this version, the backgrounds (i.e., the Blockade Runner's hallways, the sky during the droid sale on the moisture farm) are the best looking here, as there's no "blocking" (everything is even and smooth).
If some grain is to be left, however, then the most recent (third) sample is the best (post 1942). As far as skin texture is concerned, this version is the one to beat, and it manages to keep the film grain without sacrificing the backgrounds (hallways, sky) too much. Overall, it also looks "natural" for lack of a better word, and is pretty much how I remember Star Wars looking. It may not have quite the same knock-your-socks-off effect of the original clip, but it may well be the most faithful of the three versions.
Truth be told, they all look really good DJ, with my vote going to sample 1 (from post 1829) or 3 (from post 1942). At the end of the day, I'd be ecstatic to be able to watch the OOT at either of these levels of quality.