Karin (sometimes known as Gabrielle or Ala Pastell) is an established model; Alice is a relative newcomer who recently had her breasts enhanced (they were gorgeous before but she perhaps knew she couldn't compete with Karin's natural wonders....)
Karin vs Alice
(https://s4ck.com/forums/proxy.php?request=http%3A%2F%2F2.bp.blogspot.com%2F_rwdg2EXFOLI%2FS2QZ91qsOQI%2FAAAAAAAAB2A%2Ff6P_m6Ck7Pw%2Fs400%2Fthe%2Bdaily%2Bdouble%2B2008-10-15-A.jpg&hash=47adb16cd414d299bf32e03cbcbb1bc22b07eac1)(https://s4ck.com/forums/proxy.php?request=http%3A%2F%2Fwww.boobsjournal.com%2Fwp-content%2Fuploads%2F2009%2F10%2Falice-goodwins-amazing-new-boobs-5.jpg&hash=8f8c69fb19d0e54c80a835e0679ce301f72437af)
For my money i would have to pick Alice although Karin looks more aggressive in the pictures.