@Roloz - they all have its + and -.
I use it like this:
MySensors Nrf24: My default radio, cheap but might need some work sometimes to get it to work - DIY
MySensors RFM69: More expensive radio and also DIY but I find it a bit more reliable. I use this mostly for long range like garden and outdoor.
RFLink: I use this to switch my AC mains, because then I can buy switches (433mhz) which are approved to switch main power. This only because of safety.
Note that RFLink isnt MySensors so you need a RFLInk gateway for that one.