Nice setup! In addition to a decent scope I like having a USB logic analyzer. There are lots of cheap ones but Saleae (no affiliation) makes really nice ones.
If you have to make the choice between getting a Saleae logic analyzer and a similarly priced oscilloscope, I think the logic analyzer fits more people's use case than the oscilloscope, because digital electronics and signals are more approachable to hobbyists and novices. If you're primarily concerned with decoding digital communications signals, and inspecting their timing, a logic analyzer is the tool for this job.
Nice, wasn't aware of these. We have a lot of NI boards and Picoscopes for analog and mixed signal but this looks like a good choice. We've used their FPGA boards in the past.
