I thought it was from a blu-ray (i.e. HD), but I misread your comment: it is just a blu-ray rip.
You can send me the originals and I'll see to which size it is best to resize, but the quality of the new pics posted do not seem really better than those currently on the site
It is strange that your originals are HD-sized but stll have the quality of a 640-wide divx.