I tryed with 2.7, this version is fine. I select my Ultimaker Original + printer and start ok.
I work with 15.04.3 and I like save project files function and material profils on this 2.7.
After this I reinstall 3.03, but crash when I validate printer select window.
I search with this new version a better surface finish, because trajectory of the head is bad when we have 2 top surface very nigh.
EDIT 22/10/2017: Congratulations for Cura 2.7, very good job, with 1mm Z offset + good inter-lines space + head trajectory mix choice, the finish of top is very very nice.