Strang's latest book DE&LA is disappointing, it is linear algebra and its applications with the abstraction taken out and mushed together with supplementary notes from ODE videolectures. Mattuck's ODE course is good.
I should say his penultimate minus one book, DE&LA is from 2014 and I think he has published a couple more since then. Linear Algebra and its Applications is his 1988 book.
