When going custom, spend some time researching what actions will end up being your pride and joy. This will start with how true they are from the manufacturer as some customs are NOT custom at all.
We all have our favorites for different reasons. When you buy from Men with decades of integrity, much engineering goes into design and Quality control before they leave the factory...I can not stress this enough.
Borden and Bat are on the top of my list, worth spending a little more money on these actions, and with their reputation, the value will remain high for the rest of your life.
The very heart of the action is the firing control system, and you rarely ever hear anyone speak of this issue which lance Barely touched on.