Looking for recommendations

Hey guys, I've got a Creality K1 max, had it over a year (after waiting for the extruder issues and other problems to get ironed out) and I love it, but I had to rework the cable chain and I'm looking at multi material/colour printing. I was considering waiting to see what Bambu released this year, but given the recent stuff going on with them I'm going to give them a pass until things cool off there. I know the K2 plus is out now, but are there any other MMU options out there that offer the same build volume I already have? (300×300×300). I print a lot of helmets so anything that's same size or above would be preferable, what options have you seen that look good to you? Also, pick of my latest print to appease the filament gods 🙃