Im glad you are happy with Ultimaker 2 and it should be like so, its an amazing product. I can now disclose my reasons why i quit. I didnot consider Ultimaker 2 chasis enough stable, some parts of the x-y gantry looked too cheap toy like plastic, feeder is a problem, underextrusion is a problem.. just to name a few. I consider it a great product, great looking, great idea but too expensive for what it is and how its built
While surfing the web i found something that made me smile. Heavy steel chasis, feeder that is so strong it could pull anything, ballscrew, 30X20X400 mm build height, no plastic and all parts made from machined aluminium, steel or stanliess steel, 100 MHz 32 bit ARM CORTEX... and little more than half price of Ultimaker 2. Shipped in 3 days after i ordered (i waited 3 days because i requested a 1.75 mm extruder from standard 3 mm). Only problems is that they shipped the extruder for 3 mm by mistake but i got a new one for 1.75 mm promptly by DHL.
Tested in on 50 hour prints, rock stable electronics, chasis and mechanics sturdy, stable, rigid. I think you could throw it in wall and it would not miss a single printing line.
Here is one print, 0.25 layer, PLA, 150 mm/s, i tried it to 250 mm/s and it works. I wont say what printer it is, i dont want to say what printer it is, Ultimaker forum is not a place for it.
Edit: The only downside is that its not open source, but a closed Chinese product. But i don't care, if you really look around your lab, workshop, house, anyway 99 % of products are closed source.