One thing I often see people not knowing is that havoc'd chaos bolts can procc another CB on the bracers too. 2 Warlocks in my guild have the destro bracers and are sad about it. No idea what they wished for other than Feretory if they have lootspecc on destro. I would be very happy about those bracers.
Sadly no idea what lootspecc to choose atm. Affliction looks great on ptr, but I have no idea how it will actually end up once 7.1.5 hits live.
Destruction on ptr looks meh, but the T19 4piece is really amazing.
Demonology has Sindorei Spite, but damn demo looks weak in 7.1.5.