https://youtu.be/kiJcFGcrvFk Sennheiser recently introduced their new digital wireless system which they call AVX. There are various kits available and in this episode I used the kit with the transmitter, receiver, and MKE2 lavalier microphone (their higher-end pro lavalier microphone). Here we did a few tests to see how well the AVX does in terms of distance (keeping its signal without dropping out), managing WiFi and RF interference from phones, and how long the included Li-ion batteries last for the receiver and transmitter.
Sennheiser is clear to note that the AVX does not replace their G3 analogue wireless system (because it has more flexibility for professionals) but that AVX is aimed at videographers that are running solo and want to feed the audio directly into their camera. It is aimed primarily at those using pro-level camcorders with XLR inputs but also comes with an XLR to 3.5mm adapter for those shooting with DSLR or mirrorless interchangeable lens cameras.
In this video, we compared it to the RODELink in the distance and interference test and found that the AVX was able to hold on to a signal a little bit longer than RODELINK. Though admittedly, I never shoot with my talent out of sight of the camera or audio recorder so they're both fine.
Full disclosure: I own two RODELink kits and have the AVX on loan from the good people at B&H Photo.