Is FedEx Shipping Reliable?

I ordered a Turtle Beach Recon Chat White Headset from Microsoft Store using my hard earned Microsoft Reward points because I currently am using very sensitive earbuds. It was supposed to be delivered on Monday, February 22 between 8-11 PM, right now it is Wednesday morning and the package is pending on the track website. I was told it would process the pending state when it is ready to be delivered and that I would have to wait 24-48 hours to escalate the situation if no update is received. I understand that there are severe weather conditions across the route to my city. The question is, is FedEx reliable I saw reviews giving a bad representation towards the company and their package is always late. Should I request for it to be delivered by a different company? What should I do?

:)