if you can get one, then take Power Sink.
Power sink is autohit (Consume is not), has a recharge of 120s (Consume 180s), it gives more End per Mob [25% vs 20%]. It will cost lot more end than Consume btw (16,3 end vs 0.5), but you can make it work very well with just 4 slots (Recharge + EndMod + 2x EndMod/Recharge), last 2 slots are not really needed [you can use them to get the end cost at 8.4 more or less].
With Consume you could slot a full Efficiency Adaptor set btw (assuming you are 6 slotting it), and have some nice set bonuses (+recharge +hp +regen +recovery +dmg), useful for permadom too.
The recharge will be 20 secs longer than an equal slotted Power Sink btw. Having both is just a bit too much i think: at 50 with a permadom, Consume might be enough, because you would have 100% end every 80-85 seconds, then Consume every 55secs [vs Sink every 35secs]..Without perma dom, i guess Power Sink would still be enough.
PS: btw both should be waaay too much, i think i will manage to survive with just Power Sink, and my dom is mind/ice, with no pets, and an end hog secondary too!
Also, if you have any vet respec, or if you are already using your final build [even if you dont, getting respecs is easy if you play on Union,idk on Defiant], try getting them both and building for your permadom/final build, slotting either of Consume or PS wont cost more than 30M imho, and when you respec out of one, you can always sell IO sets back at BM..Test a bit to see what you like more, try and play using only one etc
Your character will tell you what will work better :P
Good luck with your dom, and have a nice day! in game my global is @krumhur, and my dom is crashy, lvl 37, if you need any help just send a tell
