The LW is fine for Postwar hogs like dual-motored Fs and the 773. The starting voltage is too high for a lot of modern locos with can motors (assuming that you're going to operate them conventionally.) Unless you rewire dual motors in series, or put a long string of diodes between the pick-ups and the motor, they leap off to a start.
The 1033, with a nominal range of 5-16 volts, or even a 1034 (with 4-14 volts) is a better choice for such low-current applications. My $.02.
