In fact, IMHO, all films in sheet would be exellent !
Why ? Because on 35 mm size, digital is superior, in 120, it is a bit on the expensive side to go digital, but, who knows ?
4x5 and above will keep the competition for some time, so sheet film may be the last film availlable....
And, as far as grain is concerned, it will be good.... to have high speed film in order to depart from digital capture......