wrote:
How are the Instek DSOs, in particular the "portables" like GDS-2064,
in comparison to comparable Tek 'scopes like the TDS2004B?

In my opinion, they are not that bad. The Instek scope that I have is
the same price as a laptop, and it can also do image and video capture
like this:

http://video.tinypic.com/player.php?v=2e4b7kx

"The video shows the voltage spikes at the NO terminal of a CMOS SPDT
during switching transitions."

However, in terms of the waveform displays, I seem to prefer the
TDS3000B scopes that we have at school. The bad thing is that those do
not have USB connections and still rely on floppy discs.

The Instek scope that I have feels like a toy also, but I don't mind
its performance since it is just a starter scope. I am thinking of
getting an analog scope as soon as I can save up some money.... or
request more student aid. Hahaha.