New to multi boxing, best class choices?

[Chorizotarian]

Warlocks can DPS while healing the pet.
Hunters can DPS while healing the pet.

And breaking out 33% of your DPS to heal means you lose the ability to get through lots of encounters because you just can't DPS fast enough any more. With 3 pet classes, by the time whatever it is kills the last pet, you should have it almost dead or close enough that you can kill it before things get really ugly. Pets are cheap to replace/feed/etc. if they die.

I don't get this. How is a hunter who stops dps'ing to cast Mend Pet any less of a break in your dps than an ele shaman who casts a heal? Plus shamans get passive healing in the form of totems.

[Chorizotarian]

Ah, I haven't played a hunter in a while. Thanks.