What´s a good price on a Rickenbacker 4003? Is the sound different than on a 4001? I heard that the bypass operation is made on the new ones. True? I had a great autumnglo 4001 but sold it for a Precisionbass. Stupid? Well, I regret it but I like the fender to. Should I go with a 4001 or 4003 and what should I pay?