Overall, I was impressed with the quality of the set. It's cedar so it is a softwood. But, all the boards are of good quality. No warped boards and the pre-drilled holes all line up well.

The one annoyance I've found is the hardware. The nut barrels and t nuts are really finicky. Some look poorly tapped. You need to make sure the bolt is perfectly aligned just right else it jams (if you force it you destroy the threads). For a few of the bolts it literally took minutes to get the bolt to thread properly. Looking at the threads on the nut barrels for some of the more annoying ones they looked like they were threaded twice or something (the start of the threads looked like they had threading inside the threading...it was weird).

The hardware does work fine once you can thread it, but it was definitely an annoyance during assembly. And, it's plenty strong.