South side is gorgeous. I love the bits where you find yourself at water level with only a little stone wall between you and the water. And near the end when you go winding through this, what feels like, and ancient woodland with lots of lush green. Fantastic road, and super quiet too.
Well I had a bloody great LEJOG. Wrote a little bit about it here:
https://medium.com/@plasticniki/leblog-or-a-celebration-of-a-little-bike-ride-5d30fb3da1da
Best bit was Scotland, obv. Really glad we decided to take the road to the south of Loch Ness. Was the best bit of the entire trip!