PLO and PLO/8 best for clearing raked hands?

[PocketJokers72]

To those who do this whoring thing a lot...

Is low limit (i.e. PL25) PLO or PLO/8 best for clearing a bonus? It seems to me that every single hand is raked. Granted, you see less hands per hour than NLHE or LHE, but you don't have to play 10,000 hands to get 5,000 raked hands.

I enjoy NLHE and PLO/PLO8 equally, but am wondering from a scientific standpoint if it makes more sense to 4 table PLO rather than NLHE to clear a bonus.

Does anyone have any experience on this?