"Probably the best app control experience of any LEGO set I've had, it's really really well done.
The model is larger than I thought, and very detailed. Took me 1.5 days of non-stop building to get it finished. I particularly liked the color coded cable management inside the model, that was a nice touch.
However, the quality control issues other reviewers have noted also struck me; one of the step 1 bags was split open in the box, and instead of the 4 dark grey gears needed to make the excavator rotate, I got 3 gears and a turquoise 1x3 brick that's not even part of the model. It's a bit annoying that in these cases it can take up to two weeks for LEGO to send you the replacement part.
Overall though, this set was everything I wanted, and I want more sets like this!"
"It's been a while since I've touched Technic, so this was a good small build to practice on; lots of detail and functionality for such a compact build. I found assembling the innumerable track plates quite cathartic.
Lots of stickers though, and I'm always bad at sticking them on straight! I also found it odd that the control panel tile in the cabin has a sticker for the gauges, when Lego makes a tile with printed gauges on them.
The mechanisms to rotate the digger arm are quite slow. You've got to spin it like crazy to make it move a decent speed.
Additionally, it was a bit strange to me that the cabin is just too small to fit a minifigure; feels like making the cabin big enough to fit one would've been a rather trivial modification to the design.
Overall though, nice little afternoon project, and I do recommend it!"