As I need to test my FPGA implementations, I had a look which could be the best platform (in terms of price/value) to use. I decided to go for the ZYNQ boards, explicitely the PYNQ-Z1 and CORA-Z7 boards.
Reason for that is, that there boards have a nice Ubuntu based OS to boot and a Python based framework to deal with the FPGA management. This simplifies this process, so I can focus on the hardware implementation itself.
These boards do not have any analogue video output anymore, so I also started with some HDMI implementation. I also got an Agilent HDMI tester for that purposes.
But in parallel, I also got some VGA interface PMODs, which I extended with audio output as well.