Surely there are different types of head work needed for different types of engine?.
On my old burton engined mk1 escort which had been ported +polished, the inlets were larger but still had a slight roughnes to them, when i questioned it i was told it was to disturb the flow and aid the mix of air and fuel .
When i had my saff head done , all the ports were smooth. I guess different engine builders and tuners have different ways of doing things ?.