This kit has exceeded my expectations. The packaging is exceptional (both the box and the packages for individual components), the online assembly instruction is easy to follow, and the result looks every bit as good (if not better) as the promotional video, and every component and wire ends up hidden behind the excavator's plates. The installation can be a bit fiddly as pieces are very delicate, so it's important to pay attention during the process. The only possible negative (if I can even call it that) is that due to a battery pack, the excavator's back side becomes a bit heavier and ever so slightly leans backwards if the boom is pulled all the way up, but it's hardly noticeable, and the structure is very robust and can easily handle that.
Overall, an exceptional product!