Why did you switch? I use xbar to run a script every second for the existence of a file, and I noticed xbar using a lot of resources.
After moving the icon around to my fav place, xbar didn't retain the position on menu bar after restart.
Bitbar/xbar is great because it isn’t limited to just calling an API. You can run a .py or .sh and print the results, enabling more complex workflows and displays. I’ve build some pretty niche tools using it, mostly related to local weather