It can be quite hard to use Cura (Not impossible, but there's a lot of work involved). The firmware on the A3 is very touchy about things like decimal places, so there's sometimes a need to tweak the gcode from Cura. The FlashForge slicer it comes with isn't bad though.
The A3 was originally a horrible machine, but it underwent a few revisions and is now I think quite decent. I haven't had one for a while though. Not too much else in that price range that's enclosed.