I've used these guys a couple of years ago on the Lexus aloys (which were a mess from corrosion) and they did a decent job. He does work for the likes of Adrian Quinn in Ardrahan.
https://www.facebook.com/quinnautostyling/
He had a mobile unit so was able to come to the house, remove the wheels and do his magic.
I see he can now also do diamond cutting too....
Radfix in Galway also do a top Powder Coating job if you want to go that route - http://www.radfix.ie/powder-coating