Today I finished the project of making my facility reconfigurable from recording/editing to mixing/mastering. This is sort of the Millenium Falcon of mix studios: It may not look like much, but it's got it where it counts.
My studio monitors and headphones are adequate for many tasks, even finishing up an audiobook. But when mixing and mastering music, movie soundtracks, or a radio drama it helps to have the right speakers. The Wilson Audio Sashas (mine are Series 1 – you can read about the new Series 2 here) are musical, revealing, and analytical. While they're good for just kicking back and listening (or rocking a movie) critical listening is what they were designed for.
Granted, it doesn't look remotely like Skywalker Sound. But with my "MacGyver" setup I can reconfigure from production to mixing in about 20 minutes, and it was way cheaper than getting a second Mac Pro. Fortunately the Mac Pro is quiet enough to be right in the room, so I didn't have to get fancy with the cabling.
Now I don't have to jog down the hall to listen to the mix and take notes. Creative decisions on level, placement, EQ, reverb – everything – can be made right here.