I have an X, am considering the Macan. Yet, you will get a lot less space, just the 4+1 seats. Quality will be a lot better for sure. Driving experience will be better if you are pushing it, the Macan will likely feel more of a "driver" car. But those FWDs
The GUI and ergonomics of the X will be better than the Porsche, yet the Macan will have the headsup display etc. No more front shudder with the Macan. I think the efficiency is similar, this is the new PPE platform of the VW group and it can likely compete with the X. This is not an easy one, if you need the space, go for the X. If you want a superiour driving experience, go for the Macan. One other thing, it is possible they will come out with a new X in 2 or 3 years, that may impact your re-sale value. Yet, I think Porsche is also not know for their great re-sale value... No matter what you will go for, both are great cars and fun to drive.