I have made it my business in the last 5 years to evaluate and test nearly every GPS module on the market, from nearly every company. From all my tests I have no doubt that the OriginGPS modules represent the best performance versus size trade-off in the sector, by quite some margin. I can also happily report that the technical support I received from OriginGPS team was by far the best out of all the GPS module companies I have dealt with.