I've had a variety of joysticks on my MAME set up including a variety of joysticks on my dedicated games. I had micro switch joysticks, wico joysticks, mag stick plus, u360's etc..
Personally I think for MAME u360's are the way to go. It all depends on the spring and plate you install. The digital mapping is pretty good. It depends how your mounting it and on what height your control panel will be personally I think mine sit too low, I know you can buy larger shafts to change the height / feel of the throw. The ball top on the u360 is nice, but smaller than a traditional Wico ball top leaf. Everything really boils down to personal preference. It's pretty impossible to have one joystick feel perfect for over 3,000+ games but I think the U360 does a pretty solid job.
I mean if you think about it MAME emulates the games and the U360 more or less tries to emulate the joysticks that those games used, it's pretty remarkable.
Wico's use a rubber grommet, spring with leafs or micro switches. And the U360 a spring , magnet etc.. So do they feel the same? Relatively but Not really. Bottom line is I recommend the u360's for MAME. They have great versatility for MAME.