For me, it was the other way around:
I liked the 3 column layout initially but a few hours later, I switched back. Don't get me wrong! I don't hate it but the "information at a glance" just got lost since text became too small. For instance, if you have a Samsung Ativ S, try reading the upper and lower temperature for the day on the tile - impossible! Or try reading the calendar tile at a glance without having to squeeze your eyes. Reading text on the smaller tiles takes you longer than on the 2 column layout.
The size of the tiles doesn't bother me though. It's really just the text size. I wish there would be an option to make text slightly larger on tiles.
So, yes, I still like the look of the 3 column layout but I would sacrify usability by enabling it for me.