Old Man Emu - it will actually improve the ride, and provide a modest lift. Can't go wrong. Reassuringly expensive, too.
From what I hear, any other suspension lift will have an adverse effect on ride.
If you want more, a body lift will allow larger diameter tires. The unsprung weight will increase, so ride will suffer somewhat, also fuel consumption (increased weight), and the final drive ratio will be raised, which will affect your speedo readings and reduce your cruising speed in top gear.