I was in the same position two months ago and decided to go with the Prusa MK4 kit with the enclosure. So far I’m happy with my purchase. The deciding factor for me was lastly the loudness of the device because I wanted to use the printer in my apartment. Reviews said that the printer is relatively quiet and I can confirm that. If the door to my “printer room” is closed I’m not able to hear it.

Some points about the MK4:

Positives:

• It prints very fast with the new Input Shaper firmware
• I can control the printer via LAN and WiFi (or print directly from a USB drive)
• Excellent print quality
• Open Source and spare parts are avaiable for a long time

Negatives:

• Maintenance is complicated after installing the printer in the enclosure. You can only access the printer through the front door which makes reaching the sides of the printer difficult and removing the printer from the enclosure is not easy as well because you first have to disassemble the display unit.

I dont’ have access to a Bambulab printer so I’m not able to compare both the Prusa MK4 and the Bambulab P1S. Nevertheless, I’m happy with my printer and can recommend it.