Astia 100F would not tolerate exhausted processing solutions as well as Kodak Elite Chrome 100/E100G(X), where Astia and Sensia 100 turn greenish. Grain - under the microscope or in a high-resolution scan - is virtually the same; but I would consider Provia 100F instead of Astia 100F, as the "older" film has the higher contrast at low spatial frequencies, apparently finer grain, and a really dense black. For medium- and large-format photography, this may be not as relevant as with 35 mm film.