Which are the "best" Intel AHCI/RAID drivers?

I don’t really understand, I am confused:

Am I supposed to “Mix and match” the driver package components?

According to the picture above, I go to the thread:

And then I download the “Pure mod+signed driver” v13.2.8.1002 but then for the RAID function I download the v15.5.3.1054?
Or do I just pick one and only install either ACHI or RAID?

After I pick one and install one, I install the “Suitable original Software Installer Set”?

I will not make any changes to my system until I am completely sure what to do. For now it appears to be working fine. Perhaps there is no point in trying this.

I have a AsRock z77 Extreme 4 and I had to go to the AsRock page and look under Windows 8.1 64bit to find an old RST driver that appears to be working fine. But if there is any benefit to attempting this upgrade I can try it out. I just dont want to break my system.