If you do go the box-set route, you might want to be careful about which editions you buy.
Alec from Technology Connections[0] about a year ago put out a video detailing frustrating trend: many modern DVD box-set re-releases of popular series are being quietly downgraded in quality.
Basically publishers are taking content originally authored for dual-layer discs and cramming it onto cheaper single-layer discs to cut costs. The result is aggressive over-compression, terrible macroblocking, and sometimes outright playback issues.
It really sucks: you try to do the "right thing" by paying for a legitimate, physical copy to own your media and you end up getting ripped off with crap.