read these posts earlier today butt where i did, i could not comment, blocked by company whatever.
I agree with Brad, don't spend extra for fancy finish, after two cooks, you won't see it again.
the plate i had made was run thru a machine that is very much like a planer.
This machine puts on a brush-finish.
All the machined stainless at the plant i am employed at is treated in this manner.
It is by no means a fancy finish. And the process takes all butt 1 minute.
The plate I have is made from 11 gauge (3mm) German stainless steel.
Very expensive and not readily available in the USofA (that i am aware of).
The 11G will not warp or curl or be deformed by the heat. It is virtually indestructible.
As much as cleaning the plate, i see no reason to. Unless, there is grease or anything on it that may burn and stink...
butt overall, I only scrape off dried drippings and/or whatever else does not belong on it.
Cleaning it up to make it shine certainly is not a priority here.
Recently, I have been placing same foil pans on the plate to catch drippings to make a clean-up fast.
Photo taken this evening, never really clean this plate except for scraping off grime...