The gold standard for ROM preservation. No-Intro focuses on removing bad dumps, over-dumps, and hacked intros. A "better" SNES set will almost always be a No-Intro collection dated within the last year.
Click the title. Look for the text file in the preview. A "better" set will explicitly state: snes full rom set archiveorg better
(If you need a three-or-more-option comparison table, tell me and I will provide it.) The gold standard for ROM preservation