Both sets have their positives and negatives, though overall I'd say the EB set has more negatives due to QC problems that many collector's have experienced. The fact that the EB set costs much more makes the QC issue much more scrutinized, and deservedly so. Nobody wants to pay $325+ to get a damaged figure, but at the same time I don't want to pay $225+ to get one either.
Oddly enough I lucked out and got 2 mint EB sets, whereas 1 of my DX sets had QC issues.
Both sets did a great job nailing the sculpts, I think someone would be happy with either set in that regard. It's a matter of personal preference.
The EB muscle body looks incredible, yet lacks in articulation and the DX body looks very good and offers much better articulation. Again, personal preference.
Accessories-wise the EB set is hands down the better of the 2 imo with the wooden pagoda, wood chair, studio lamp that lights up via USB, director's camera, clapper board, loud speaker, 2 GOD suits, bamboo etc.
Which is best? Who cares? It's in the eye of the beholder.