Specs
I've been running mine for several months with no issues.
On the comparison chart, the surface receivers work down to 2.0volts not 3.5volts as shown in the chart.
It uses PPM modulation on the Futaba. I've compared it to FASST and spektrum DSM pro. (not DSM2) Its noticeably quicker and more responsive when compared to the DSM pro. I can't notice a difference between FASST and XPS, they are both extremely responsive with no noticeable lag.
I like the fact that it can handle 120 separate channels simultaneously compared to 39 from spektrum.