I can't speak to DPS queues other than what I've heard from other people (which, for leveling dungeons, are usually complaints on how long it is), but...

Healer queues right now are really nice. Instant a lot of the time, usually <5 minutes when not. A certain times of day, it's not uncommon for the roulettes to show healers as in need. DRK seems to have given tanks a nice population boost, so healers are in a good spot right now.