I like the designs, but don't like the metallic composition.
Checking the final production numbers of the four designs and the two mints that produced them, it is easy to see which have the greatest potential for appreciation of value. Just make sure you get them shiny and put them up. One day they may be worth what a solid copper cent is worth.
2009 Lincoln Cent Mintage
"Birthplace" – Philadelphia 284,400,000
"Birthplace" – Denver 350,400,000
"Formative Years" – Philadelphia 376,000,000
"Formative Years" – Denver 363,600,000
"Professional Life" – Philadelphia 316,000,000
"Professional Life" – Denver 336,000,000
"Presidency" – Philadelphia 129,600,000
"Presidency" – Denver 198,000,000
Best,
Scott