My best is probably now, but seeing as how I'm living in a nice apartment with my wife who I haven't seen in a year, that's kind of a no brainer. This last year I've been deployed, an aside from my wife it's the best living situation I've run into. We actually had hard billets with hot showers, and contractors to clean the latrine areas. The power was stable, and my roommate was pretty much the man. I lived with the guy for a year and literally can't think of a single argument we ever had. It was pretty ballin all things considered, and somewhat miraculous that even with deployment stress and literal 24 hour contact (we worked in the same place too) for a year, we never got into arguments.

The worst had to be my second roommate right after i joined the military. This guy was disgusting. When he moved in, he layed down on a bare mattress and immediately fell asleep in his clothes. The next morning, he emptied his two duffle bags onto the bare mattress, fished through them for his Physical Training uniform, and threw his old clothes onto the bed with the rest. When he came home again, he fished out a new set of civies, and threw his pt's back into the pile. He lived their for three months, and never washed or put away his clothes. He would routinely go a week or so without showering. He would get burger king for lunch every day (there was one next door,) but would only eat half the burger, and I later found out upon a source-of-stench search that he had been stashing the half eaten, rotten food under his desk instead of throwing it out. This was only compounded by the fact that our base was vastly overpopulated, so we were living in condemned Vietnam-era barracks that they had decided to un-condemn without actually renovating them. The AC didn't work, we had community bathrooms, and open bay showers that were rarely, if ever hot. Hell.