Not for professional use

I bought the Curve a few days ago, because my old QWERTY keyboard has given up the ghost and I was looking for an interim solution.
From handling her she is very pleasant. Keys are smooth, quiet, pleasant Durckpunkt.
What bothers me is that the keyboard feels even if a key is pressed longer need in a way to change "Sleep Mode" and the key press interrupts (after about 5 seconds). This means if you want to delete a little more text, you have to repeatedly press the Delete key, so will continue to be deleted.

In addition, the arrow keys are rather unfavorable position, so you only need a little practice to find this blind.
Unfortunately, the space bar is a little too wide straight, so you as an ambitious C # developer now gets tendonitis, if you want to {and [write what happens in this profession unfortunately a few hundred times a day. (AltGr + 7)

Partly remain key also depend - not physically, that the key is stuck, but by software.
If you press the Ctrl key and have it going again, so it will remain there and hang again, and so the next time you write a shortcut is simply executed or it just happens nothing more until you press again on the Ctrl key, which I think this is a no-go.
Not being this good is one thing. To be malfunctioning another.

For my circumstances it might still be a little angled, so I miss the clips on the bottom of the keyboard to adjust the height.

For private use / "Every now and then use" a very nice keyboard, but for professional use is not recommended.