One thing is sure though. They won't be able to sound exactly the same since the 115 has such a massive body in comparison to the 215. That's also why I think they will have a different driver as well as I suspect the 115 needed the extra space to house a larger driver.
Maybe the 115 was getting trounced and Shure is upping the ante in the $100 market!
Edited by dweaver - 3/6/11 at 1:46pm