Brutes are a solid choice. I highly recommend Staff/Dark Armour.
The Stance in Staff that reduces End works wonders while you figure iout your end usage, which is of the utmost importance with DA. Later you can switch to the Dmg one and wonder why you didn't do it so much sooner. Yes it it weak against certain things, robots always come to mind with their tin heads, but the damage can definitely be improved upon substantially. Throw Musculature into the mix later for added oomph. Lots of AoEs, mainky cones. Yes Yes I know..cones...yuck...they actually get pretty easy with a bit of practice and a bunch of hopping around. A Defence Debuff from at lvl 1. The Tier 9, Sky Splitter, does heavy Single Target damage when charged up with Staff's particular quirk, Perfection (hit 3 times in a row, get a bonus to that attack or the oh so wonderful Eye of the Storm).
Plus you are spinning a staff and how cool is that?
Dark Armour has pretty much everything you need for success as well: Decent Resistance and easy to build Def (one of your cones will help with this), immune to Holds and such, an Aura that makes your foes tremble in Fear, another that damages while they are helpless, a rez for when things go bad, stealth and arguably one of the best heals we have.
Yes it is a lot of auras to manipulate so you are not a ball of dark, multicoloured light, but there are options for minimal effects on some of the powers. Yes it is weak to Psionic but I gather everything is.
Brought mine to 50 purely Praetorian...well kind of. When I hit 40 I ran Tina of course. As well started helping out Vanguard, I had previously established a relationship with Dark Watcher on Praetoria; went to Cimerora a couple of times as dimensional hopping was old hat by now.
Or maybe that was my Psionic/Dark Scrapper.
Either way.....Great combo and great stories.