Lamprey_02 wrote:
I used the tank pet pretty exclusively from 1 through 90, pre-DoV. Now at 90, when soloing, I use the mage pet pretty exclusively
He can handle anything up to and including most soloable named in DOV. I use the tank when doing solo runs through older dungeons, like Chardok/Seb/Guk etc.
It worked, was relatively safe and quick.
That said, I recently started a necro alt and the mage pet at lvl 20 seems to handle all solo content VERY easily. Doesn't get hurt much and kills quickly. He's a master, but at lower levels getting a free master via research is fast. So if I were to do it over, I'd probably have used the mage a lot more, only switching to the tank for nameds or heroics.
I'd say, get the mage master and give it a shot. You will know inside of 5 kills whether you want to use it to solo or not, would probably take you less time than it does to read through this thread 
Another +1 on this. Mage pet is a MONSTER in DOV; just remember to know how to summon him when he tries to pull big groups away from hitting you, or he'll get out of healing range.