Objectively speaking, the quality of this set is excellent. Having other wooden train systems in the house manufactured by IKEA and Toys r' Us (RIP), the BRIO set is clearly superior, even at a glance you can identify the BRIO system when mixed in with the other tracks.
The track systems are fully compatible with all of our original sets [TRU and IKEA] and also compatible with the Thomas the Tank series of wooden train engines, cars, etc. [Not Minis, Trackmasters was untested]
The detail on the cars are simple but have nice touches. For instance the cargo log cart has a sturdy elastic band that holds the logs in place but they can also be removed!
Subjectively:
This set is a great started for a young child's [2-4] 1st step into wooden train sets as it is simple and promotes some fun imaginative play. I love the simplified semi-abstract aesthetic, I think this allows for a greater "imagination canvas" making for some great play scenarios.
I will say, if your child is in the 5 age range it may be a bit overly simple on its own however, using this paired expansion set opens it up for a great amount of play. If I was scoring on this experience alone I would give it a 4 star but I think objective and whole scope ratings are a better reflection of product.
As an early reviewer, I received this product in exchange for my opinion. This in no way has influenced my opinion, i'm just happy to share my feedback with the community!