Maybe a dumb question, but wouldn't it be better to wait for the inevitable high-definition re-releases of popular films like Blade Runner? The image quality curve is definitely pretty near the apex with HD DVDs, so it's unlikely that they would be as readily replacable by another format later on with as big a difference between it as DVD to Blu-Ray - IMO a good choice for a "reference" copy to own, and keep going back to over the years.