I have rated this on the basis of somebody interested in travel around and history of the Scottish Highlands and Islands - if not move on.
This volume combines two books covering the same journey - plus lots of reference notes at the back. So a bit of a hassle to read easily. Perhaps it would be better if they had been compiled with one book on each side to read in parallel. I ended up reading in sections to match the journey.
This hassle aside, it is an absolutely fascinating insight into the period, shortly after the 1745 rebellion had ended and before things had changed entirely.
Of the two volumes Dr Johnson's is the easier and better read in the modern world. More factual and descriptive.
A lot of Boswell's book describes detail of conversations had en route - and he was clearly infatuated by then society and its privileges and airs. But again it is fascinating in its won right, even if some of the sections on society tittle tattle can be skip read. But it is fascinating where he meets and speaks to key people in the history of the time, including the Flora MacDonald and others who helped the Prince escape to and from Skye after 1745.
Not an easy book but a unique window into Scottish history circa 1775