Not to be the unpopular one in the crowd...but I ran the H&R coilovers on my XI for over 50k miles. The car took corners like it was on rails, it was more confidence inspiring than my E46 M3, BUT, that came at a cost. Ride comfort. This car was my daily driver, and it was not a very comfortable ride at all. If you take the family out or others in your car often you might want to think again. Personally I would not opt for the H&R coilovers if it is a daily driver.
Seems the most comfortable setup for an XI is Eibachs and Konis.