The Tsent (his name is Corvus) was the character that got me settled in Silver a few months ago. He's very survivable and plays similarly to my SP sentinel Shepard. I like the Phaeston on him because lore. I've only played him in Gold once (in an all-turian theme game with Mordokai and GruntKitterhand) and gave him the Hurricane on that occasion.
Even before I saw this thread, I was planning on giving my quarians the day off one day this weekend and play turians to do some weapon challenges. I played Tsol (his name is Aquila) last weekend to finish the Revenant challenge, and deployed the TGI (his name is Umbrosus) for the GPR challenge because he makes even the weakest assault rifles effective. This weekend, I would like to try Aquila with some shotguns. If he can't make me enjoy shotguns, no-one can.
The Cabal (her name is Medea) is one of the characters I soloed Bronze with in my pre-BSN days. Biotic Focus makes her so survivable, which I need due to extreme scrubosity. Her dodge catches me off guard though, I tend to phase through walls accidentally and then wonder where I am. And then it happens again.
I haven't deployed the Havoc or Saboteur yet.
I use him with a Raptor most of the time because Turianrifle(amidoinitrite?) on him just seems right.
The Raptor flavour text says that it's a human version of a turian weapon. There's actually a small Cerberus logo on the stock. But hey, even a Cerby knock-off of a turianrifle is a fine weapon in a turian's hands.