In my viewpoint, TH6 is the hardest level for guarding your sources. TH7 gamers only face a 5 % loot charge for attacking you (i.e. scarcely anything) as well as have a much bigger military. As a result, you are getting subjugated quite a bit at by TH7 players. Thankfully, absolutely nothing in this level range is awfully costly to upgrade, so just be sure to invest your resources frequently and also you will not have to bother with it excessive.