From all the printers with a reasonable price, let´s say not over 1500,- EUR / 2000 USD I would like to have the Mendelmax 2.0

This printer is still an open source one and you can modify it. But it has a lot of improvements
- big printing area (230 mm x 310 mm x 225 mm)
- heated bed ( in that size!)
- linear rails (X and Y axis), precision shafting and bushing (Z axis)
- Resolution (X & Y Axis): 0.0125 mm (12.5 Micron)

At the end it is much more precise than most of the the mainstream printers - but it is an mainstream one!