The quality is very good, and I don’t know similar plastic toys for toddlers with the same quality.

I have a lot of Duplo, some are new, some are 20 years old and went through a few toddlers. I can feel difference in tightness. The new ones are much better. Maybe Lego did improve the quality of the Duplo overtime, or they are simply less used.

In my case, I also find the old transparent bricks to not hold so well. They don’t handle much load before detaching.