My, what a big grow you have!
Overall, if pure yield is the goal, SOG is the way to go. You can do it in DWC or NFT, but I expect that you'd find NFT generally a bit more efficient in that setup.
I'm a big fan of DWC (any problems with nutes don't propagate to other plants), and the quality is top notch.
Overall, the two systems, if tended carefully, shouldn't have any major differences in quality...