> I am not sure what "should" means in that context.
Really?
The phrase means "what was the best choice", which means "she could not figure out which model offered the best balance of price, performance and features."
I can't offhand think of a more efficient way to phrase it, TBH.
I am not sure what "should" means in that context.
Surely many models would have been suitable. It is more a self induced SKU nightmare/issue for the manufacturer.