@somethingnicer
Like @koendb says, if you’ve got the money, Mirka Deros 5650 is the bee’s knees. If you’re looking for something a bit cheaper then Rutland’s do a reasonable alternative.
https://cdn.axminstertools.com/media/catalog/product/cache/6aa9e1e59bcc5998e1687ab5ba3e27a4/1/1/111675_xl.jpg 
https://www.rutlands.com/collections/random-orbital-sanders 
🎸🙂🎵🙏