microsoft flight simulator or X plane..
what he is saying though is you are better off with NO FD experience because typically in the sim portion of an interview you will fly the approach "raw data" meaning they will turn the FD off because anyone can follow a FD but it actually shows skill to fly it raw data. So the moral of the story is completely skip the FD and just work on your normal instrument scan and flying approaches at 140.
When you need to at airline training you will learn how to use the FD in less than 10 seconds, if it is the V bar style you just stick your v bar into the FD vbar and follow it around and it will cross up your loc and glide slope no problem.
at citation said....they make you lazy but sure are nice to have