All farmers: consider switching to BARCH
Its a ton of fun. I made it to all max TH8 (ahem, save lvl3 PEKKA, some DE troop upgrades, and walls, of which I have 69 skulls and the rest purple crystal) by farming with giant/healer. I've used gems but by far mostly for donations, because my clan is small and there isn't always someone on. So as soon as I get on I gem everybodies requested donation and fill em up.
I just tried barch today, and first, its A TON OF FUN, giant/healer gets soo tedious and all those compartments drive you nuts, barch is over in a minute and I STILL HAVEN'T LOST A BARCH RAID, despite the fact that I'm not good at it yet and playing on an android that can't handle 2 fingers and has a tiny screen. An IPAD would make this even easier.
Its super cheap. Unless you pick a really bad choice of base to raid you won't lose any elixir, its profitable every time so far. If there's a downside its just that getting to the DE in the middle is pretty tough against better bases. But I guess thats why CC has the lightning spell.