Look for a proper Blu-ray Remux or x264/x265 encode from trusted release groups. Avoid upscaled fake "1080p" versions.

Rick and Morty – S01E01 "Pilot" | 1080p Blu-ray Remux

Essential for collectors. The pilot holds up, and the Blu-ray gives it the technical respect it deserves. Option 3: Pure File Listing (Usenet / Torrent Description)

Proper Blu-ray rip – not a re-encode of a web-dl. No watermarks. Synced perfectly.

Just grabbed the Blu-ray version of the Season 1 premiere. The upgrade from the standard broadcast/webrip is noticeable – cleaner lines, better color grading, and no compression artifacts.