I actually run my home office on a rock 5b, and at my office, I use a odroid n2+ with a displaylink adapter (so I have two monitors — one to read from and one to write on when I'm researching, etc.). I just fuse mount the local file server, which in each case are themselves ran on arm. I used to use pi 4s. For office work, arm is fine. I can browse westlaw, use Libre office, and run mpd over pulse. That's about all I need to live.