I will second the idea that there is no BEST. Different games play better with different joysticks. So there is no BEST, but I can tell you the WORST, Happ's Ultimate and Competition are pretty much the worst joysticks commercially available at the moment. Both use a defective design with diagonals that are much larger than the primary directions, no games NEED that, and it makes a lot of games really hard. Circle games like Robotron especially suck with those sticks.
No one ever talks about the Happ's Universal, but I like it, it has been growing on me over the years. It is especially good for Q*Bert.