Ahh, Sin Tee's Voidwalker is by far my favorite. Having Singularity as a long-range crowd control tool AND long-range primer is amazing, and using the shield-powered Lance to trigger biotic combos in quick succession is very fun and flashy. Still, I vastly prefer to use the Annihilation Lancer as my main loadout, and save the Voidwalker Singularity setup for bosses and enemies that don't leave room for risk, like Hydras and Architects.
