I really like her mane!

This is a really tough one! They are very similar ponies. They are both kind, down to earth and they dedicate their lives to improve the lives of other ponies. They both have similar personalities and quirks as well. The only real difference between them is, that Cheerilee is treated like a normal pony, while the princess is not, but would love to be treated that way.
I chose the princess, because her character in itself is a valuable lesson: nopony's perfect and even the princess is just a pony sometimes.

Once again, I very much agree with Queencold! ;) It was a tough choice, but I went with Cheerilee by a hair...she seems like a very cool teacher, the kind most kids would want. Fortunately, I've had plenty of teachers along her lines. Not a pushover by any means, but friendly, funny, and offbeat enough to make class enjoyable--neither too easy nor too difficult. She somewhat reminds me of Miss Honey from Matilda. ^^

I love her so much! >w<

Princess Celestia :D