You have not given us any details of the environment in which you want the system to work or the distances involved - apart from "indoors".
I only have experience with the nRF24L01+. Its 2.4GHz signals can be disrupted by the walls of buildings and 433MHz signals would be more likely to penetrate them.
This Simple nRF24L01+ Tutorial may be of interest.
If you have a pair of Bluetooth devices (perhaps a phone and a laptop) you could do some tests as they also use 2.4GHz.
...R