I have been trying to get WP Post Columns to be fully functional but it wants to stagger the top position, so as you work across the columns from left to right, each one starts a line or two lower. You can see the effect: test.bikinglesalps.com and test.bikinglesalps.com/pyrenees.
On the homepage I was able to decrease the difference by playing around with manually adding some
</p>. But having to hack the layout this way kind of eliminates the editing ease for the non-code literate user of the website.