always thought that the grass would have been my choice.....
Know your aircraft, Mustang in Victoria had a gear problem and decided to land on the grass, belly scoop acted as a plough and caused extensive damage, including buckled fuselage frames, as it scooped up earth and grass. Not shown in many of the flight manuals, but WWII P-51 advice was to land gear up on the bitumen, just a bit of sheet metal work required on the belly, not a major rebuild that grass would require. War time the aircraft on grass may have been scrapped.