I really liked the 'Starship Options' and found then useful.
I purchased the book for the rules on creating small craft and found them similar in structure to the Starship design rules in the core book. I was slightly disapointed that the 'small craft design rules' do not blend seemlessly with the 'starship design rules'. A 100 Ton spacecraft designed as a 'starship' without the Jump Drive would be far superior to a 100 ton spacecraft designed as a 'small craft' - they should be identical.
Overall, I am happy with the purchase and enjoy using the product.