I mentioned borrowing a PS4 and thanks to playing Watch Dogs 2, I decided to grab a Dualshock 4 pad for PC use.
You can use an existing Bluetooth Radio but I decided to go with the official adapter. You will only be able to connect 1 gamepad per bluetooth radio / USB stick. The Official USB Wireless Adaptor has a push in Sync to Bluetooth option and this is a nice physical option, versus setting bluetooth to connect / pairing mode, in your OS software settings.
The USB device is listed as CUH-ZWA1U with a part number of: 3001729 (roughly about $25 USD).
The Gamepad goes for about $60 USD and ships with an internal rechargeable battery pack.
This will work on OS X or a Windows machine. You can confirm the buttons by going into Control Panel | Devices and Printers. Confirming that your DualShock 4 pad buttons register in the diagnostic tools there. If you need some help over using Steam to update your dongle driver, check this TechRadar guide for DS4.
Pretty easy and no diabolical 3rd party driver needed, as was the case with Dual Shock 3 controllers being used on PC.
Jumping back to my PS4 use, the headphone port on the gamepad is really nice. Especially since my TV does not have a headphone out port, I can put some headphones on and plug into the gamepad. I am still checking if you can control the advanced options like Light Color and Brightness for the gamepad on PC, that you can do on the PS4.
Personal opinion, I prefer the analog sticks being next to one another, instead of the offset Xbox approach. I was also considering an Xbox One controller, but for that and the accessories (like rechargeable battery and cable) being extra money, I went with a DualShock 4.
Here is the link from the documentation for the adapter, linked to the Sony product page.
Source: FTB Threads