I keep getting bumped up in trophy rank by defensive victories (damn all these people who ignore my undefended Town Hall!) so I've been getting raided more often and by much more formidable opponents. Some of them use a variety of troops to take down my defenses. The most successful had usually been people who used a combination of Lightning + Giants, Wall Breakers, Archers, Goblins, and some Barbarians/Balloons/Wizards. As a low-to-mid range TH5 that's a bit too much for my defense to handle, so I usually lose around 5-15k gold and elixir per raid before my towers finally stop their troops. It's pretty disheartening but I can recover from it. But the worst one by far happened the other night, and I was shocked because it was only with 35 Barbarians, 40 Archers, and 40 Goblins. I've dealt with those troops before and it wasn't a huge deal, but this one just crushed me. I lost over 60k gold and elixir from that raid. That was a tough pill to swallow. And then right after that a guy stole over 57k gold with a raid of 111 barbarians and 1 Wizard. It seems that just zerg-rushing my base with a shit ton of troops brings more success than by using the more clever methods that I saw earlier.
Zerg rushing works pretty well at lower levels since you don't have much splash damage yet. Once you get at higher TH levels and have 3 mortars and 3 wizard towers, those zerg armies tend to get torn up before making it very far into your base. Always look to upgrade your splash damage first to help stave off those attacks as best you can.