I recently bought a CTEK MXS 5.0 for the wife's 07 Shelby for winter storage. Easy plug and play. They have the traditional charger clamps and a short connector that you can keep attached to the battery and just plug into the charger when needed. I did the connector thing, so I can just park and plug. So far so good.
I recommend looking into CTEK. They have several different types of chargers.