I've found it to be a mixed bag. It's been very hit or miss on both the Gogo system used on ps and the more common global satellite system (Panasonic?). Haven't had a change to try the system in DirecTV planes yet. Personally, I'm glad they chose a global system over a CONUS-only system, even if it does take a bit longer to iron out. They always refund me if the service truly sucks anyways.