Depending on how far into building you are changes what buildings you use, so lets just say def, att, bal, and spy. You only need one def building to collect the 5% bonus gold ( unless that has changed since when I last played) and you only need on bal building to get the extra troops for an extra attack (again, unless that has changed). So then it all depends on what you want to do, if you want to go hansel or full on attack. If your going attack the rest is personal preferance but you will need some spy buildings to increase plunder bonus. But if you are going hansel then you will take JUST ONE ATTACK BUILDING and that should be a bal building. You want the bal building because that extra hit will be worth more than the 5% bonus gold per hit. Hopefully that explains what you are looking for.
Hey truffle, it seems like you have allot of towers. Did you reset when they were still giving reset bonuses?
With eb bonus payout a hansel makes much more than an attack build. That is as long as it skims its spies. With spy unloads it still earns more but the gap isn't nearly as big