The XE will give you a little more low end torque and the XD will give you a little less low end torque but higher numbers farther up the rpm scale. I just changed out my HD torque cam with a HD tune, and put in the XE with a FM tune. The XE gets up to 130 ft/lbs in a hurry, and stays there through the rpm range I usually use. Night and day, the HD torque cam is NOT in the same class. Sounds a whole lot better as well.Just like you I had my eye on the 468 as well and then kinda started entertaining the idea of the 22xe and now this cam comes out. Glad I'm not sick and tired of my HD Torque Cam yet.