I used both a Yankee (the later ones with the drop-in 12-sheet holder) and Jobo.
The Jobo is easier to use but I thought the negs were a little to contrasty for me -- following their roller rotation method.
So I instead used it upright per the Kodak method with regular inversions.
The Yankee tanks are good if you have a good technique. To make the liquid go over the neg surfaces evenly
you'll need to do twist the tank right and left, like a washing machine agitator, periodically to get good movement.
Then you'll get good negs with only moderate spilling out the top.
Oh, and the yankee tanks are also very good if you want to do open tank dipping from dev. to stop to fix. Several tanks can be quite handy.