Different tripod recommendation questions
You have made a significant dollar investment in your camera body and lenses. Don't short change yourself by getting a budget tripod. The tripod is an important piece of equipment. You bought a 5D Mk3 and L lenses so I am sure you are serious. So get a good tripod and ball head, Gitzo or RRS.
I have a 5D Mk2 with a collection of L lenses. I use an RRS BH-55 head and a RRS TVC33 tripod. For travel I use a RRS BH-40 head and a Gitzo Traveler tripod.