GLBP Load balancing

I want to know that, is GLBP supports both Data nad Voice Load balancing.

As I am having 2 no of L-3 switches which are connected to 2 routers at LAN side. These routers are connected to remote side ( WAN ) 2 routers.

Currently we are using HSRP, as one link is active and one backup.
We want to utilise both the links.

Can anybody tell which protocol is suitable for this senario. (GLBP or EIGRP)