They're exactly the same for me, but with my accent, everything comes out rather flat sounding. :) I prefer
Kristen, which just looks a lot kinder to me than
Kristin (probably because I know a hideous one). I like the name
Kiersten best of all, though.
(I'm ambivalent on
Kristina, which has the character from A Doll's House on one side, but a nutjob woman on the other. I'm not a big fan of this family of names in general, really.)
Array
"What are these parents thinking?...Let's name her Madison--she'll live in her own world: 16 square miles surrounded by reality." -- Susan Lampert Smith