It's worth noting though that this part of the game is about to change majorly for both brands.
Prusa is widely known to launch their next-generation tool changer at Formnext in Nov, which is going to be a concept where you have a rack of nozzle+heatpipe+filament tube tools that the print head grabs and heats up inductively. And Bambu is more or less working on something similar they will probably launch some time next year.
This is totally changing the "nozzle swap" equation. It means purge-free and much faster multi-material printing without outright duplicating print heads like the XL does, and the ability to park and mix nozzle sizes as well.
It'll be cool to see which company pulls it off better. As someone who was never convinced by either Bambu's shoddy and wasteful AMS or Prusa's ridiculously humongous MMU+Buffer approach, this is the leap I've been waiting for for an upgrade.
Edit: Amazing move to downvote a comment that simply and neutrally adds new information to the thread.