And never forget that the next try could get you something worse. So if you get a long-range archer unit with very low armour, you just might want to suck it up and keep it, because who knows how long you have to try to get one with the same range an better armour.
That's why I suggested that they build two, knock down they don't want, and then try again--so that they have at least one.
My prior posted one was 55%, and the one below is 60%. Guess again? 
Shadow Snipers Archers 20 70 / 10
I was under the impression that the more barracks in the region, the worse the stats. I figured this was why cities tended to get a good recruiting center for their first one. All unsubstantiated, unfortunately.
and 70/10 archers are pretty cool. Set them to skirmish, train them like crazy, and hope that the enemy doesn't get close.
