5 Star Rating for the Product all together.
5 Star for fast shipping
3 Star for the package, clumsy taped box, but luckily no damages.
1 Star rating for the instruction. There was no instruction included in the box. And the online instructions are not accurate for the model which has new features. It was really a puzzle to put the parts together after the steps#12.

After assembling the unity bar, it was such a feeling of you completed a impossible puzzle. i'll upload the photos, it looks awesome and will give 5 star rating for that reason.