Because a Taylor has a balanced, low-impedance output, a DI is superfluous. For other guitars, I would want a Radial JDI.
Some people when using the term, DI, don't mean a direct input box (a device that converts an unbalanced, high-impedance signal to a balanced low-impedance not) but rather a preamplifier with an output that is compatible with balanced, low-impedance equipment.