I have been using a Hangar 9 crank pump for about 4 years, and it works great. I like being able to count the cranks to know how much fuel I am burning each flight. It can also help tell you if something is wrong with your tank, if it takes a lot fewer cranks than usual to fill up.

I once thought that it was starting to wear out, as it was getting really hard to prime and taking a lot of cranks to fill my tank. Turns out the inlet on the end of the suction line was just filled with lint. I cleaned out the lint and it was good as new.

Unless you are filling up 24 ounce tanks in big planes, I would go with a crank pump.

Good luck