Would the following two triple integrals over E be best solved using cartesian, spherical or cylindrical coordinates?

1) (y^2.z^2) dV where E is bounded by the paraboloid x=1-y^2-z^2 and the plane x=0

2) y.z dV where E lies above the plane z=0, below the plane z=y, and inside the cylinder x^2+y^2=4

Would also appreciate reasons for your choice.