The Medic-Heavy Duo...

Everyone knows that the Medic and Heavy work well together.  My question is this: when you see that duo in action together, is it better to attack the Medic or the Heavy?  At first, I thought I should go for the Heavy because he's the one trying to kill me.  But while he's being healed, the Heavy can take two or three rockets to the grill and not even be phased.  Is it better to kill the Medic (hopefully while the Heavy is distracted)?

This has been discussed a ton of times. Read this.
It's best to kill the healer first.

that's freakin hilarious. penny arcade owns. but yeah, please kill the medic first. if he's not even healing and just running around, kill him. he needs to be the first to die hands down in any conflict.

OK, I confess.  I found this link in the "Medic" forum shortly after I posted this question.  Who would have thought to look in the "Medic" section for a question about the Heavy-Medic combo?  Madness.