Other peoples opinions may vary but...
I don't think the location makes any real difference as each individual fish has it's own personality. I have two Venezuelan aimara, one which I would suggest is not as aggressive as the other. It's currently living in a 300g with A large ATF and a group of brycon. They do get the occational tooth mark on them, this wolf still smashes the top of the tank when I pass my hand over. he rarely comes to the front to flare at me, more sits where he is and flares. The other flares if I walk in the room let alone in front of his tank.
Don't get me wrong they are both extreamly aggresive but varing levels of extreamly aggressive. I wouldn't put my hand in either tank. Maintanance equipment is always attacked.