So I just purchased a Whirl XT for the wife and myself. So far so good, lots of fun has been had. But for Christmas I actually received a gift card to the Liberator store and was debating, should we try the full-size Whirl as well? It's an inch taller and a foot longer. Anyone who's tried both, is it worth the investment, or should I look at another piece? (We already have the Wedge/Ramp as well)