I was considering a Mini Countryman too. In fact I looked at both that and the X1s again today. I've had 2 Minis in the past so familiar with them, but thought the bigger Countryman might be what I want.
The Mini seems cool and and fun and quirky. The X1 still seems cool and fun, but definitely more of a grownup car. A real car. As someone that's about to turn 40 I think I'm due for a grownup car.
I think I'm going to make myself drive both just to be sure, but I'm already 98% sure I'll be ordering myself an X1 next week.