'cura'? That's interesting.
I have a "Lulzbot mini". Around $1200. It runs 'cura' and yes, it sits on top of Slic3r as well as, I think, Pronterface.
I bought it because it runs straight out of the box.
Originally, I had bought a kit...I just didn't have the patience to tweak it. But it taught me a lot.
I've had very few problems with the Lulzbot. Mainly, I think, because I use the filament/settings from the manufacturer.
On the other hand, I'm not trying to do 'perfect' prints. I use it to make tool holders, picture corners, experimentation, the odd stuff.
Once in a while a corner has pulled up.
What strikes me though...all of this came out of 'open source'. The people who developed Silc3r and Pronterface...amazing engineers.
A bunch of people have made money off of them.