If you can only take one route, which would you do and why?
- Isles of mull and Iona and Staffa (puffins?) OR
- Falls of Shin , Corrieshalloch Gorge National and then take the coastal North Coast 500 route (Applecross).
If you can only take one route, which would you do and why?
It highly depends on time of year. The puffins are only around late-April to August. The NC500 can get pretty crowded by June. Applecross is pretty quiet outside of high season.
Assuming you've never done either and never seen puffins, I'd do the Mull tour. If puffins are important, the tour that includes Lunga is the best show. Staffa is more interesting for the geology. We did it in May and had shirt sleeve weather, even on the boats. The other option is typical beautiful Scottish scenery and narrow roads, but I wouldn't call it exceptional.