If you only need a few, check out Grainger's or other online
distributors. I have a local Grainger's store, and they special ordered
what I needed from their warehouse.

OK that's what I am anticipating doing. but which ones to buy?
I want to to be able to produce a variety of finishes on hard steel,
to
aluminum, & other soft materials, w/ a minimum of work & a reasonably
minimum amount of files (read $).
What would some of the regular contributors here, people who
work regularly in shops, buy to meet my needs?
Please share any specific advice, JD