Personally I think the Centurion is very cool. Pricey, but cool.
As for 24-inchers, most of the 24-inch tires on the market today are for kid bikes or (I think) some sizes of BMX bikes.
But there are some "performance" 24's out there. Look at the Schwalbe folding tires here -
http://www.everybicycletire.com/Shopping/c-17-24.aspx
Schwalbe has a very detailed website, you should look at their website, too.