For some reason when I ordered I thought the side handles would be made out of a more sturdier material than just plastic. They worked well though. Instructions are a bit complex to understand, as original drawings were probably rescaled and details are too tiny to see. At the same time this set is pretty straight forward with 2x4 from 4 to 6ft, with 4'6" as probably optimal size for the bench. Longer 2x4s would make the bench too heavy in my opinion.

Pros: Great idea and implementation, no brainer to assemble
Cons: Having different options for the side parts would be nice