I can only recommend the rain cover, even if it is slightly more expensive than the others. We have an older model of the Quinny Freestyle and it fits perfectly. We bought at least three inexpensive rain hoods and annoyed every time, because it has front and rear not fitted.
Here I find it very beautiful that it can be closed by a zipper and it is also quite long, so that it comes up under the basket and everything stays nice and dry.
I would recommend the rain cover in any case, even if it is more expensive than others.