Just ordered a third device for a special price of just under 150€ here in Europe. Despite of of some bugs and flaws I really think that this product is worth for the money. And what's the best, the new FW release fixes most of the issues that have been annoying me, including the clicking of the audio and the possibility to see the live video directly via MyDlink without using the Advanced Settings interface.
The MyDlink cloud service is excellent if you have have an ISP that cannot provide you public IP addresses. Good job D-Link so far, and I'm still expecting new FW releases where e.g. the issue of overwriting the same file via FTP is addressed (this is actually the one and only feature I'm still missing