My 5-yr old UMO is still awesome, and the prints are strong and virtually flawless, but I've noticed something with the infill.
This print uses 20% infill but you can see gaps at the cross-hatch junctions. The seem to form on the far side of the line of motion, like the perpendicular wall wiped all the filament away and it takes a millisecond to re-emerge.
I'm no Guru when it comes to tweaking the settings, so there may be something to be done about that. But I think if Cura could alternate the infill direction every layer, these gaps would disappear, or at least be minimized, making the part even stronger.
Again, I remain totally impressed with Ultimaker, Cura and everything.