lvl10 bracket

Hello everyone I startet twinkling and decided to gear up my 5fth twink. Now I have to make a decision. Should I stay at lvl 10 with my ret or is ist better to got lvl 11 for an additional holy power generator or even go for lvl 13 for divine storm?

Most people by now have heard of it, used it and probably know about it. But i must do justice to this magnificent Trinket, this trink can be obtained through the High Mountain questlines, specifically Rite of Blood . You see the discription of the trink, you say "It gives low mastery" I tell...