Just betrayed back to coercer (lost my master domination earlier in the summer when I thought playing an illusionist would be fun...) and I couldn't handle charming anything with an adept 3 domination, even the corpse flames had laughable dps. So here I am, level 70 and using a master beguile when soloing/charming for dps and saving the domination for control fights.
Even with the 33 master, the dps is noticeably master quality, but I lose pets much, much more frequently.