ScOT or SCISSHL?

After completing 5.10 of Module 5, I have an understanding of what ScOT and SCISSHL are, but I'm not sure I feel any closer to knowing which one is going to last us in the long term. ScOT terms seem to be more simple than SCISSHL ones, and that makes me suspect that it is more likely to be the long term option - people tend to like simplicity. But I am not sure that that is the best way to go. Simplicity feels like the best option in regards to a search, as I am worried some of the SCISSHL subject headings might not come up when someone does a search, particularly someone who does not have a good understanding of them, but then the ScOT ones often feel like they are too broad, they do not give a good idea of what the item is about, and perhaps too many items would come up when you want to do a more narrow search.

I am undecided, and I would say still a little too ignorant to make the decision anyway - but I am interested to see what happens in the long term.

SCOT and SCISSHL

Examine and compare the entries for “Atoms”, “Minerals”, “Angles” and “Cars” on SCOT and SCIS Subject Headings Online to see examples of the differences between these two controlled vocabulary approaches.

Atoms: SCISSHL has 'Used for' and 'related terms', as well as broader terms and narrower terms, whereas ScOT only has the latter two.

Minerals: SCISSHL says 'USE mineralogy', ScOT has the term Minerals (Mineralogy). Both have BT, NT and RTs, though SCISSHL has more of each.

Angles: The SCISSHL search puts 'angles' right at the top of the results, whereas the SCOT search appears to show everything with the word angles in it. SCISSHL only has the one broader term for this one, whereas ScOT has HEAPS of narrower terms and some related terms as well.

Cars: ScOT uses the word 'cars' as an allowed term, whereas SCISSHL says to use 'motor cars'. SCISSHL has an indexing note (IN) and a specific example note (SEN) for motor cars, and a number of broader and narrower terms. SCOT has a few of these terms, but no other descriptions. The term TNR has come up for each search result term in ScOT, I wonder what it means... Can't seem to find the answer to that question anywhere...

Very sleepy now - need to decide whether to have a nap or go shopping for tea... Or both....