Units in PvP
Zeals
Zeals are best dealt with using your own Zeals with some Goons mixed in. Reavers also shred Zeals, so make sure if you use Reavers to protect them properly.
Goons
Mass Goon is best dealt with using SpeedLots and/or Goons of your own.
Goons/Reavers
Goon/Reaver can be beaten using Goon/Reaver, but you will need to micro better or kill his Shuttles/Reavers before yours die. You can also try to overpower your opponent using mass Goons.
Goons and/or SpeedZeals and/or Temps and/or DTs and/or Archons
Late game generally both players will be using Goons, Zeals, DTs, Temps, and Archons. Generally, you want to meet your opponent with a similar army. Have Obs if your opponent is using DTs. Storm his Goons and Temps, focus fire with your Goons on his Archons if he has any, and try to micro your Zeals so that you dont lose any if you don't need to. Also, try not to lose your Archons. Keep them alive to deal with Zeals.
Scouts
Dealing with scouts is best done using Goons and Storm. Corsairs might work, but they lack other purposes.
Sairs
Sairs aren't much of a threat, so dispatch them using Goons.
Carriers
Carriers can be attacked using Storm, Scouts, Goons, or any combination of those. MC'ing Carriers is also a good idea, but isn't practical.
Arbiters
Beware of enemy Arbiters Stasising portions of your army. Make sure you have Obs to see the units under the Arbiter's cloaking field. You could use Feedback on the Arbiters, or just try to kill them as quickly as possible using Goons.
DAs
You can Feedback enemy DAs using your own DAs, or just try to eliminate them before they can Maelstrom your Zeals, or MC an expensive unit. DAs aren't an overly big threat, but should still be approached cautiously.
~*rpf