Your steel is most likely softer than your AS. At CKTG the Idahone Fine <link>
is highly lauded, as is the MAC ceramic <link>
Honestly though, they still have their limitations. I find strops are much more efficient, and since they are dry, they are quick at work or after. <link> Strop - set <link>
; it's double duty. They allow refinement beyond your stones in less expensive options, and they work to true your blade as a steel would but w/o degrading your high grit finishes.
If you already have a lapping plate for your stones, grab this strop set <link>