Reading data from SAP BW using data services - Best approach

Hi all,

I would like to read data from SAP BW tables and would like to know the best approaches:

1. Call the tables created using Open Hub Destination from data services.

2. Call the InfoProvider - Infocubes/DSO directly from Data services.

Out of the above, which is the best approach in terms of Performance perspective. Or is there any other options to read the BW table data from data services?

Thanks

Bala