Smart load balancing

Hi,

I have two internet connections, one 30mb/30mb symmetric and one 30mb/3mb asymmetric. I want to set a load balancing configuration to use both of them but I understand that a regular PCC definition will just send 50% of the connections to one and 50% to the second one. Is it possible to set some smart load balacing configuration so the router can get the best of each internet output?
Thanks!!