Not Logos, but:

If you have to choose between a future with the United Federation of Planets from Startrek or the Imperium from Warhammer 40K, which would you choose?

The Imperium in a 40K like universe and the UFP in a Star Trek like universe. Switching them would be disastrous in either case. Not that either is optimal even for its own environment, and the actual universe is extremely unlikely to resemble either fiction. I agree that, given an unlikely future where humans still in control of their policies expand into space and encounter aliens, being able to afford being nice to them is better not being able to, and actually being nice to them is better than not if one can afford to.