The other issue I don't like with DSOs is that you have to get a more expensive model to get decent spectrum analysis and waveform math like FFT functions. Of course, the USB-based ones get around this pretty well, but the software is different for each one, some good, some not so good, and you end up paying more for a new device thought it has less bandwidth than a comparable used DSO. What would be cool is if there were some good open source software that would process signals uploaded by these earlier model DSOs. Best of both worlds.