Most people would rather have the basic Topps card since they're almost exactly the same (MBs have a shade different back color and some have the white stripe on the left side of the card). That's because more people are working on the basic Topps set than the Nolan Ryan rookie sets. Or you could check sold listings:
https://www.psacard.com/auctionprices/
Both are pretty hard to find centered, so if you want either or, go for the most centered one.