Data transmission between two HC-05 Bluetooth devices

I'm currently working a project that required to send data from one arduino to another arduino via Bluetooth.

I have selected following two modules for my project.

HC-05: HC-05 Bluetooth V2.0 RS232 TTL Transceiver Module – Scion Electronics

HC-06 (with 4 pins):

If anyone have experience on working with those two modules, please share your experience with me, since I'm new for this topic.