I mention from personal experience:
If I didn't know it was Ravensburger (I have done many 1000-1500 and 2000 piece puzzles and always satisfied), I wouldn't believe it... very mediocre quality. Basically, they have the soft click as a technology here too, but because the pieces are large and they haven't reinforced their cardboard, they warp... not easily, but for children it is easy... the colors are vibrant... 4/5
However, I liked the Schmidt ones more. 4.5/5
There are puzzles with 100 pieces that are of higher quality + a book. 5/5