I don't know the person you mentioned. They're probably a great Machinist..
I know the Machine Shop close to my house said they have junk valve seats and valve guides and that would be $800 to fix... Then at that point I guess I would want a new valve job as well. Might as well get new Springs retainers and all that as well.. what the hell at that time I might as well have them ported... Damn it I should have just got the truck flows..
Damn it you're right! All the gurus are right I'll never be happy unless I spend 3k on some heads...