Hi,   We want to buy a new 3D printer at work. I heard very good stuff about Ultimaker and we want a system easy to use and reliable (i.e. we don't want to be touching and tweaking the machine every day).   The question now is S5 vs 3.    In the comparison page in ultimaker.com I honestly can't see many differences between them, apart from the size and touch screen. The resolution is the same.   What is different is the price, S5 is almost twice more expen