Fed Ex delivery. Why do you use them?

Why do you continue to use Fed Ex?  I have yet to get a single fed ex delivery on time from them this year.   My recent sonos purchase was supposed to be here before Christmas.  It of course got delayed until December 28th.  It showed that it was local and out for delivery on the 28th but then the status changed to “weather exception”, in spite of the fact that we had no weather issues and expected only light snow (less than an inch ) later that evening.  I checked this morning and now there is no delivery date scheduled.  It shows my package is pending and now its no longer local but in Missouri?!  
As long as Sonos continues to use Fed Ex for deliveries, I am no longer giving them my business.  Continuing to use Fed Ex with all of their well documented problems is bad for business and shows a total lack of concern for customers needs.  I am at the point of return my recent purchases and cancelling my latest order.