When you look for MOC vintage MOTU, ideally the entire package is superb. But if you had to choose between...
a crisp, sharp C10 card with a dark yellow, cracked, dented bubble
--- OR ---
a clear, unmarred, perfectly formed bubble on a beat-up C5 card
Which is the lesser of two evils for you?
I'll take a so-so card with a perfect bubble any day because the yellow bubble obscures the amazing characters and vibrant colors of the figures! Though if I was buying one to open to make sure I had a minty fresh, complete, loose figure, I'd go yellow bubble all the way!