The Mighty KBC: MFSK128 is not perfect, but 95% is not bad
On the Mighty KBC, 31 March 2013, 0133 UTC, 7375 kHz, an MFSK128 transmission resulted in about 95% copy in northern Virginia. Not bad for a 480 WPM mode. Transmitting it twice or three times with Flamp would likely result in 100% copy:
See also great YouTube video by Mark Webber.