It arrived here an hour ago, and I've plugged it in and played with it a bit since then.

• GUI responsiveness is slow to non-existent (EDIT: that's not entirely fair -- see further postings below)
• 1-3 seconds from button press/release to screen responding.
• Works fine as a basic digital oscilloscope.
• The included probes do not have very good clip-tips, nice pins though.
• No documentation on how to adjust 2 of the three adjustments on the probes.
• Oscilloscope features, specifically the FFT/Math functions, differ from descriptions in the Users Guide.
• many some illustrated features appear to be missing.

I hope to establish a dialog with the makers to find out about the missing features, and might end up shipping it back to them for a refund.

Cheers