Well, I have an AF5xHD and a Force400c link side by side, so I’ve compared them head to head. There are pros and cons to each of them. The Force300 wasn’t much of a threat to the AF5xHD, but the Force400 is MUCH faster.
Since Cambium discovered that the GPS problem wasn’t actually a GPS firmware problem (actually a bus/driver problem or something like that?). Since they found and fixed that, we haven’t had any ePMP GPS issues either. We are running 4.6 firmware and no GPS issues at all.