Interesting it coincides with release of VNX
I'll be the first to say that NetApp makes a good product, but they have fallen behind a bit in innovation as well as ease-of-use. EMC's Unisphere is better than System Manager, no question about it in my mind after using both (particularly VNXe's Unisphere relative to managing FAS2040 in the SMB market). The things NetApp used to hammer EMC on were finally fixed in VNX. There is truly one GUI to manage SAN and NAS, and NAS can use the same storage pool as SAN. EMC also bundled their software into solution suites as NetApp did, so it's no longer a la carte ordering.
Now, I see NetApp folks often resort to "Well, there are still two versions of the VNX OS running under the covers". Yes, that is true. But, as long as you can manage it with one GUI and both Block and File code bases are mature and reliable, then nobody really cares. If you have to resort to that argument to try and win competitively, well you haven't innovated enough in your own product line to come up with better arguments.
*Disclaimer, I work for an EMC and NetApp VAR.