Best investments by player and decade

[moogpowell]

Strictly from an investing perspective, in 10 years which baseball player's cards do you think will perform best? (Assume the cards are PSA graded with no qualifiers and roughly have a PSA grade one number above the decade the card is in.) I am presenting the names in alphabetical order so as not to "show my hand." If there is anyone not on the list please mention who you think should be mentioned (focusing mainly on the '50s-'70s):

Hank Aaron
Steve Carlton
Bob Gibson
Reggie Jackson
Sandy Koufax
Eddie Mathews
Willie Mays
Joe Morgan
Cal Ripken Jr.
Brooks Robinson
Frank Robinson
Jackie Robinson
Mike Schmidt
Tom Seaver
Warren Spahn
Yaz

Second question. Net-net, all things considered equal, where do you see the "best relative value" in terms of potential ROI on baseball Hall of Fame caliber players?

1950s: PSA 4, 5, 6+

1960s PSA 7+

1970s: PSA 8+

1980s: PSA 9+

Also, if you think that, say, 1960s in a PSA 5 represent the best relative value, let me know. The above doesn't reflect strict criteria but is rather a starting point.

Thanks in advance!