None are better than the other. A RHCP antenna is described as a RHCP “dominant” where most of the waves (97%+ in our case) are RHCP waves. Same for the LHCP antenna. As along as both Tx and Rx antennas are either RHCP or LHCP most of the signal pass from one to the other. If an odd RHCP to LHCP antenna combination is used, you are left with only 3% signal, you’ll still have video, but not a pretty one.