Hi, guys. I've been looking for a keyboard to help me in composing music. I talked to a friend of mine, and he said that I should get an 88-key controller since I'm a piano player. I've been looking into the Akai 88-key MIDI keyboard, and I'm wondering if it's worth the price ($490 without shipping for a used one on Amazon). If it's not worth the price, then what keyboard would you guys recommend?