Corner loading was a no-brainer in my situation. I've got a sealed subwoofer so I knew placing it away from all bounderies wouldn't help boost the lower frequencies that roll off much sooner with sealed subs. In my listening room I am flat to ~18hz as a result of corner loading, with output down to 10hz! W/O EQ
Here's my FR
My current mains are rated down to 51hz, and are faithful to this spec. So I also happily crossover at 80hz with great results.