Thanks, but I've already started playing AND_GREAT's stable Xenophobia version.
It's balanced, they are using the same AI as in XNT, but they didn't put eggs inside UFOs, eggs don't disappear on reload, they don't have area effect attacks, vipers don't come for at least two months, also there aren't so many aliens in the beginning. Much better.
The only thing I don't like about Xenophobia is the economy mod, but I've found here how to edit researches.xml & items.xml to get rid of it.