best php framework to build MLM network?

[varai]

hi,

I'm trying to create and maintain a Multi Level Marketing (MLM) Network. What would be the best PHP framework to build this Network on?

This is going to be very similar to the direct sales concept where one member invites 5 members to join. And people sell and buy products here.

The program should also be able to calculate the incentives for each member.

I found a few on the net such as buddypress, dolphin7 from boonex. But I have no idea on which will be the right one.

Any help is much appreciated.

thank you.