Info about 433mhz receiver

I need a 433mhz to use with the Arduino for control an power outlet. I've tried the cheap xd-rf-5v module but with poor results. The best range that I can achieve is max 5-6m with the external antenna. Now I would try something like this:

It's a superhet receiver, which should be less sensitive to interferences and also reach a greater distance. Does anyone had tried this?