I have the CDE-9852 and it works great. Buttons take a little bit of time to get used to, but now they work great and are convient. But if the 56 has AUX inputs in the front and HD-radio upgradability, I'd go for the 56 definitely.
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2007 Toyota Camry SE 2GR-FE
Retrofit TSX HID Projectors | TRD Lowering Springs | Smoked LED Tails | Custom Apexi WS2 Catback Exhaust | BlueBatMobile Eyelids| UR Front Strut Bar | UR 23mm Rear Sway Bar | K&N Short Ram Intake| Kenwood DNX8120 In-dash | Lexus IS350 18" Wheels | Toyota Japan JDM Vent Visors | IS-F Black Leather Shift Knob
Other cars: F20C (AP1) | 2JZ-GE (JCE10)