Most all will work, just depends on what type and how much you want to spend. I have an electric which is mounted on a 3 gallon bucket. Many like the vacuum type.
I think most work fine. If you have s thread on dipstick making an adapter for that makes it work better. Never had great success with the tube sliding inside the dipstick. I eventually added a fumoto valve and drain that way with a tube out the bilge drain.
