Home heating question pellet furnace v. in floor heat!?

In our home remodel we are planning a change in the heating system. A home addition and several updates in the current house. Currently we are using a forced air propane furnace and its very expensive. We are considering in floor heat for the addition (master bedroom, bath, and family room), and a pellet furnace for the entire home. Has anyone any experience with both systems. How does price compare in operation AND comfort level.