Now that you mention it, I imagine a lot of the early DVDs released by MGM, particularly letterboxed or pan & scanned widescreen films would look not as good as the Netflix streaming counterpart. I've tried to find some examples of those but so far they are unavailable for streaming. However...
I've been warming up to Netflix streaming this past month. I'm an avid DVD (and blu-ray) buyer and won't stream something that's already on DVD (unless it's a poor quality public domain company) but I've been impressed by the quality of most of these. Granted they're usually not pristine and...