To be one of the major components of our prototype Receiver, we decided to analyse a bunch of RF Modules, in order to be sure to select the best performance unit and the best performance/cost unit, for our both premium and cost optimized receivers.
This is still a work in progress, but we can already understand the differences between super-heterodyne and super-regenerative units.
There are also another key specifications to take in consideration for our products. Not all receivers can operate under 3.3V, some have a significant voltage drop on the Data output pin. This will lead to incompatibilities with the 3,3V levels of the microcontroller inputs.