I have fished both, but not extensively. The biggest difference is the Hiwassee is controlled by generation, so you have got to keep up with the schedule (and hope they abide by it)! At full generation, it is serious and wading should not be attempted. Also, pay attention to a landmark if you are wading. If you notice rising water, get out. Many limits of trout are caught on Tellico with whole kernel corn, especially if it has been recently stocked. Personally, if I was going to fish more than one day, I would fish both. Tellico requires a special permit. Black, brown, yellow, and white Roostertails are always with me. A few Trout Magnets wouldn’t hurt.