yamaha or casio keyboard?

[meeeee:k<llmysnakeface]

ok so i really want to learn to play piano/keyboard and i want to buy a cheap but very good one. im 14 so i dont want a little kid's one and i am also i very quick learner and i dont want a keyboard that i will "grow out" of fast so i've seen the yamaha ypt-210 keyboard and i've also seen the casio 61-Key Portable Keyboard but i dont know which one is better. yamaha is obviously the better brand but this casio seems like basically the same thing only like $20 cheaper

so what im asking is which one do you prefer and what are your experiences with either of these?

if you know of another keyboard that is just as good but roughly the same price please tell me too.

*thanks*
these are the websites to find these products


http://www.amazon.com/Yamaha-YPT210-Full-Sized-Keyboard-tones/dp/B000UUA9P6



http://www.amazon.com/Casio-CTK720AD-61-KEY-Portable-Keyboard/dp/B000UBSY2U/ref=sr_1_1?ie=UTF8&s=electronics&qid=1233979814&sr=8-1