A slushbox automatic no matter how awesome marketing wants to tell you is nothing like a fake automatic double clutch gearbox. The performance is just in another league when driven in manual mode.
Then again I wouldn't want to be stuck with a DSG/PDK/DCT when the computer gives you the PRNDS flash of death. Slushbox is much more reliable.
For something like a VW/Audi, their manual gearbox shift throws and pedal placements suck balls I would rather go DSG.
For the BRZ, my opinion is in my profile pic.