"I have two of the XL Motors and they can run on the same batteries for atleast 4 hours.
Pros; Very strong, two motors can pull 5 pounds easy with no gearing. Battery conservative, can run for hours. Easily controllable, I learned to control my tank in a few minutes.
Cons; Hard to build a gearing that can take the strength of this motor. High Price, would be awesome if price was a little lower.