Blu-Ray content is the best consumer video widely available and on a decent television set it surpasses everything else.
1-to-1 pixel mapping, a frame repeat mode which doesn't let it look "smooth like television" and the difference should be obvious and worth it.
While there are more recent and more polished productions out there, Star Wars is one of the best restored ones available and the newer episodes all look different due to them being shot later and either partially or completely digitally.
Martin Scorsese mentioned that Blu-Ray video had something filmic, something granular in its picture quality.
He's right, of course. There's a lot more detail not compressed away, the codecs used for compression and the depiction of motion are much better than on DVDs.
Or you could skip the whole HD thing, wait several years and see whether the television industry has come up with a unified standard for 4K content until then - four times 1080p isn't 4K, actually - and found a delivery mechanism not plagued by heavily compressed streaming over a shoddy internet infrastructure.
Blu-Ray content is the shit for today though.