DST is the best trinket we have access to, and by a long shot. Stacking haste when you get bloodlust is basically infinite energy. 35% from SnD, 20% from BF, Mongoose, DST, Haste Pot, Drums of Battle, passive haste gear from BT and finally Bloodlust. Adds up to make your swing your swords like a madman. I've broken 2,000 white DPS on the Kael fight (got another 20% from the Warp Slicer though, so that's a bit unfair).