I have never seen an Avenger, but I think that I will soon. I wonder how it stacks up against a Spire DN.
Depends on the range. Avengers have a lot more of it. But if the DN is waiting on the other side of the wormhole when the Avenger comes through it's a much fairer fight. I don't think I've ever seen that in 1v1 though. The DN always has friends, and it doesn't go well for the Avenger.
And...now that I finally have enough resources, I've found a use for the Counterspy. Its great to clear those worlds that have 4 cloaked AI ships lurking about
The military command station mkIII would probably handle it too