David and Ronald both are making cubic gift boxes with varying volume. The side length of David's gift box for a given volume is given by the function below, where (x - 1) is the volume of the box, in cubic feet. The side length, g(x), of Ronald's gift box for a given volume is shown in the table below, where x is the volume of the box, in cubic feet.

x 2 4 6 10
g(x) 1.26 1.59 1.82 2.15

Whose gift box has the greater side length for a given volume?