What is your pick for the best FPGA for the money or if money is no object? I just don’t know much about this area outside the MiSTer project.
Sometimes people are lucky enough to find decent FPGAs in scrap, but it's like panning for gold.
It is easier, faster and cheaper to start from one of the available devel boards and maybe even use them as production components for small batches
In other words, there doesn't seem to be much demand in the secondhand market, and you can potentially use that in your favor to take advantage of supply selling at steep discounts.