Dualshock 4. Yes, it is a more comfortable compared to the previous dualshock, but damn the build quality on this is atrocious, it's been the only controller that I've had to replace three fcking times already, so stupidly annoying, I've never had a worse controller than the Dualshock 4.
The first dualshock that came with the PS4 I bought at launch started to fall apart on the joysticks (though, we all know about this case) just by one month using it, then the triggers started to fail, then it stopped charging through the USB.
Second dualshock... One trigger got stuck out of nowhere (the controller never fell off previously), had to dismantle it in order to put the triggers on its position but in the process... one of the plastic edges that hold the little shitty spring broke easily and fuck it, one trigger inevitably started to feel loose, until it stopped working again a few months after. Threw it into "my dump accesories" for future pieces replacement...
Third dualshock 4, the touch pad suddenly stopped working, guess what.. Dismantling the shit out of it again, touch pad cord appeared unplugged from its sensor, so I plugged it back and problem solved. However, almost one year working well until the X button stopped working... Guess what again? Dismantled it fcking again thinking it was just dirty stuff and cleaned it all up but never worked. At the end I discovered it was the transparent paper sensor that was not taking the commands for some reason so that was impossible to repair for me unless I would've been some kind of certify engineer.
Currently on my fourth duakshock 4, this time the dualshock I bought is the newest one where you can see the useless light through the touchpad and it feels solid, for now... I even have the feeling that they've improved the build quality just a little bit.