I'm just considering upgrading to level 6 archers. While the small increment in damage and hit points is sometimes going to be a benefit, what is definitely in the negative column is that every time you raise a barch or BAM army, it is going to be 50% more expensive, assuming you do both archers and barbs to level 6.
At the moment, a full army is 30k of elixir for full barch, meaning it rises to 45k. That's every time! I'm not convinced this upgrade is worth it in terms of farming.






