Drobo

WD Red, Seagate IronWolf or Seagate BarraCuda?

What disc do the best performance in a DROBO 5D?
(with the idea of getting the best speed and most out of the money)

Most expensive:
Seagate IronWolf ST6000VN0041

WD Red WD40EFRX

cheapest:
Seagate BarraCuda 3.5" ST4000DM005

Or maybe something else?

B.R.
Dan Nielsen
(Mac Pro 2013, DROBO 5D with 3 pieces WD RED 3TB)