I am thinking of getting some sort of device to assist in the changing of transmission fluid, coolant, and perhaps oil. I know there has been much talk of the fluid extractor that Bill D and others use, but I have not seen anything discussing the usefulness--or lack thereof--of the cheap siphon pumps available just about anywhere. Can anyone tell me why the more expensive apparatus is so much better?
This:
vs.
this:
Thanks for any input.
--Jim
This:

vs.
this:
Thanks for any input.
--Jim