No, I'm a Lemon fan, I much prefer them to original Spektrum sats. The Lemon's aren't clones because they are a totally different hardware design, they just operate on the same 2.4GHz DSMX protocol. I've seen macro pics of inside of Lemon and Spektrum receivers and the manufacturing quality of the Lemon is easily as good, they are all made in China anyway!
Lemon receivers and sats actually have many features that still aren't available in Spektrum receivers. in the case of the sats for instance lemon do a dual diversity antenna sat (essentially two receivers in a single sat) where Spektrum don't have such a product. I trust lemon with any of my big helis. The only heli I have had any signal loss issues with was using Spektrum sats.