based on your requirements, the X1 fits just right. getting the sports pkg could be a good compromise for fun and utility.
i asked the forum a couple of days back whether the sports pkg suspension is harsh and bottoms out easily like the E90, all replies were positive. Phil777 in particular said that it has the right amount of firmness and doesn't bottom out.
http://e84.xbimmers.com/forums/showthread.php?t=595210