I just bought myself an Ultimaker 3 to replace my Prusa MK3. But I have problems with the print quality.
As I'm going to print many mechanical parts for RC cars which require tight tolerances I decided to compare those two printers with the Maker's Muse Tolerance Test.
While the test on the Prusa MK3 (which currently has a slightly broken X-Axis motor mount) with stock profiles (0.2mm layer height) results in all except the 0.15 tolerance to get free (some with a bit of force) but the test on the UM3 shows different results.
First I used the stock profiles