I'll jump in that AFAIK, there is no difference.
Its a network interface, using a GDL-90 standard, and there's not much more anything can add to that.
I was fine with my stratux and it was cheap to build. The partnership I just joined has a Stratus 3 and I have to admit I like not having to deal with the power supply issues, whether a battery with limited life, or a cord hanging to a panel socket, but there is no difference from the Avare standpoint. Again, AFAIK, none of the ADSB devices can be used for primary nav, so quite quickly it just becomes a matter of personal preference and not which is best... Everyone has different priorities.