Bought my D2 with the 11" coil, I have plenty of clean land which was the reason I chose that option. Now seeing as XP are reluctant to release an elliptical coil, am toying with the idea of a 9" coil, or for the same price another used machine with an elliptical coil. Have run the 11" over some of my trash laden sites with some fair results, but you know how it is, am I missing things?