Best (simple) Midi-Keyboard to use with Sonar X1

Hello! I am searching for a good midi-(master?-)keyboard. - 49 keys - keys should make fun to play with! - keyboard should be easy to use (functionable) - keyboard should work well together with Sonar X1 studio (and softsynths, especially those from Komplete) - price: 100-300 Which keyboard would you recommend. In the internet, I found those three: - Alexis QX49 - Behringer U-Control UMX 490 - Roland A-500 Pro