Both are best but you have to think you are interested for long term and short term business. Accordingly you have select W3 and S-Builder Co-op.
After all one flexible option available at any time you will be go to any rank every month we start from beginning. In this point of view W3 is best best but bit costly compare to S-Builder Co-op.
I suggest go for W3 lot of benefit available compare to s-Builder Co-OP.
