Replacement router and support frustration

I have  AT&T Gigapower fiber, and it is awesome.  Only a few short outages over five years.  The frustration comes when you have to call in and deal with the broken call routing system.  I then spent time with three people in the wrong departments, and eventually seem to get the right person after about 45 minutes.  They then send out a new router, and I once again discover the service comes up on its own, and once again I have to return  the router.  

My question is this.  I currently  have the NVG599 unit.    They sent out a 5268AC.  Does anyone know if  it makes sense to switch to this new model?  Any benefit?  Or should I just once again return the new router sent in error?  

Thank you.