Birkenstock: which ones should I get?!?

I’m getting a pair of birkenstock to wear throughout the summer and spring, and even fall. Im debating whether to get the Madrid style or Gizeh. Here is why I am debating-

Madrid: cuter, look better, cheaper, don’t hold foot that well, can wear with socks. Would get pink or blue/grey.

http://www.theshoecompany.com/womens-shoes/sandals/birkenstock-p-font-color-blue-new-arrival-font-/prod177XXX413XXXX.html

Gizeh: aren’t as cute, SO comfortable, holds my feet well, more expensive, can’t wear with socks. Don’t know what colour?

http://www.theshoecompany.com/town-shoes/town-shoes-women-s/birkenstock-p-font-color-black-at-town-shoes-font-/prod177XXX419XXXX.html

Im 16 and would wear them to school as well as outside school, which ones do you think?!

If I were at your place and had to choose any one of them I would had selected Madrid..