My Prusa XL 5 tool is printing like a champ. So far I have printed a 2 colour PLA print that took the whole print bed and a flexible (TPU) print for my bike
It hasn't missed a trick
I love Prusa
I also have an ankermake printer which I bought hoping their colour system would happen, but it never did. I'm tempted to replace it with a Prusa mk4s with their working multiple material unit (MMU) which is already in version 3
And it works with an open source slicer
And their printers have a history of being upgradable
Any printer I get in the future will be a Prusa
Nozzle change is easy on new Prusa printers, Prusa have a how to on their website