The Xc 38 is a great offshore cruising boat, the rational choice, like a BMW. The Xp is a passion choice, also an offshore boat, but like a Porsche
The Xc has a luxurious interior, the Xp is more Zen but both got what it is needed for cruising. The XC has more tankage but in what regards diesel the Xp needs a lot less wind to sail and you can always mount an watermaker.
Here, some movies with the Xc 38:
Der goldene Schnitt aus Dänemark - Yacht TV