Good point about Ultimaker have lighter head to move around. But Zortrax have 2 rods in printer head in both X/Y movment so it should be stable. Hard to know wich solution is the best.
I dont know much about their ABS but it is very cheap if you own a Zortrax, only 19 dollar/kg
Also Z-suit vs Cura is not easy to know wich is best. This is hard for me to decide.