The brushed finish is the easiest finish to live with: Leave it the f*** alone.
Honestly...a bit of natural grime sort of seals the thing a bit. Fingerprints show up less, bugs wipe off easier, etc. A bit of Windex and maybe one or two soapy washes a year really does it just fine. Obviously, if I could have a babe do it using everything she's got, it would be a daily thing.
I've watched folks with brushed finishes chasing after every little thing and they end up working on it as much as they would with paint. If you enjoy that...then have at it.
