I'd like to purchase one of the small USB oscilloscopes, but have no idea what out there is "good".
I am hoping for fully USB powered (no extra supply), at least two input channels, bandwidth of a few MHz is good enough. Ability to set gain and offset/vertical position of each input is desirable. Ability to choose a trigger channel and to choose trigger level and slope is also desirable (but having auto trigger option can also be very helpful). Display software that will work on Linux and MacOS is important.
There are a few other things that are in the nice-to-have category but these a close to the minimum acceptable set. I already have a salaea logic8 with analog display capability but gain setting is very rudimentary and there is, as far as I can tell, almost no control over the rest.