I have successfully avoided purchasing MaxTrax or similar for many years, relying on other means to extricate myself. However in the mud at Overland Expo last fall, the tire tracks into the camping area became so deep I could NOT get my front tires to steer out of the deep valley. Finally a good Samaritan arrived with his MaxTrax and I "walked" right out, eezy peezy. I bought two of them the next day.
Similarly one can often get by w/o a winch; hey it's easy to justify avoiding the expense, weight, etc, BUT when occasionally you definitely do you need one, you REALLY need one since depending on the circumstances, and there really are no other options in some circumstances.
When it comes time that you need MaxTrax or similar I think short ones are "cutsey" but size does matter in most situations when you need a MaxTrax.
P.S. I probably should have purchased 4 of them!