I went to a trade fair to see the GDS-2000A in action. Now just briefly. The scope looks really good, the LCD is bright and has wide viewing angle. Photos and screenshots here:
https://plus.google.com/photos/106264218831814439783/albums/5857196858625060337It has many useful features. It can perform 8 automatic measurements and cursors at the same time. The scope is easy to use.
Two minor bugs, maybe??
The set/clear button often does not work. The scope displays "Not supported under this mode."
It was not possible to measure the waveform update rate. There might have been an internal problem in the GDS-2000A.
The guys at the stall could not solve these two problems. They said that a new firmware might fix these problems.
Anyway, I think that GDS-2000A is a well made product. It is normal to have a few bugs, when the instrument is brand new. I hope that it will be fixed soon.
(It is possible that I did something wrong, but I don't think so.)