Currently I am using:

/castrandom heroic strike, whirlwind, bloodthirst, execute (dont mind spelling if it is wrong here)

is it better to use that? or use:

/cast heroic strike
/cast whirlwind
/cast bloodthirst
/cast execute

The end goal of course just being that the warrior uses whichever one is up at the time and has the rage for. The /castrandom one works, but i find from time to time I have to hit the button more than a couple times to get it to use a readily available skill. Or is there a better way in general?