Do I need nginx?

I have a DS920+. I have installed several docker containers to support the media center, and I have reverse proxied them all using the synology built-in reverse proxy service. Works great. Many of the tutorials I have seen recommend nginx, and it sure seems like a quality product. In particular, it seems that my next install, vaultwarden, may actually need it??? Anyway, should I install nginx? If I do install nginx will I need to move all of my current reverse proxies "into" nginx? Or maybe I will WANT to, but don't necessarily NEED to. I just want to get a feel for what I am in for here.