Originally Posted by drewb0y
I was doing some more reading on this and it seems that of the 3 accelerators, APC is about right in the middle performance wise but comes out way on top stability and future support wise.
Apparently facebook uses APC and also contributes code back to the project which pretty much settles it for me.
These are reasons why we are using it too.
Also PHP6 will have accelerator build-in, and based on APC.