The Cable Co also suggest 2 meters and mentioned that the capacitance can be good beyond the filtering and noise in some cases. It may also depend on how much you want each PC to influence the sound, but I wouldn't go to 10ft unless I needed the length. I use 1.5M for most but do have some 1M to avoid loops.
I'm also a big fan of larger AWG (girth) for improved macro dynamics. It's odd to me that a short length can make such a difference, but that's what I hear. It does seem harder to make a large AWG cable sound good and balanced in other ways.