It depends. I have use the Lemon RX and OrangeRX receivers, and they're significantly cheaper than the Spektrum brand receivers. That said, I have had issues with the OrangeRX receivers not being what they're promised. Some of the early 615 models were DSM2, despite being labeled as DSMX, so I've been a little gun shy with buying more. That, and I have to deal with HobbyKing, with whom I have other issues with their shipping and stocking in their warehouses.