I've done SHD twice. First time I was getting nervous clearing out the last couple mobs, but it dropped. Second time, it dropped off the second or third kill. Hopefully you'll get it soon! If I recall correctly, it's hard to see as the color is almost the same as the bag default background, so make sure you have a loot plugin running and watch your loot.
BRD was easy
BER involved a lot of running around and farming a few items that took some time (various rare-drop bloods, those stupid plants)
Haven't done BST or BRD since they wouldn't get used.
If you're TS grinding to 350, 1) see a therapist, and 2) you'll pick up lots of GOD/OOW stuff to hoard from your epic 2.0 farming.