Offroading helmet comm's?

Hi all I am brand new to even looking into radio in Amy sort of way. Besides walkie talkies as a kid. I am looking for a gmrs bluetooth radio that I can connect to a wireless headset inside our helmets. To be able to communicate between me and my son while riding dirtbikes. I am not looking to spend a ton of money but would like a decent setup that will last us and work well for this application. I have seen videos on the btech gmrs pro, tidradio h8 gmrs, and wouxun kg 905g. If these are good or any others you all know of would be better. Would greatly appreciate the help. Thank you.