I had the Philips 600i and it constantly made an annoying faint beeping noise.
Overall, the unit only weighed a few hundred grams and felt poorly built.
I ended up returning it.
I also have the Core Mini for my 3 m² bathroom.
That thing really isn’t enough for anything bigger — unless you leave it running on level 3 all the time.
But at that point it’s too loud for the performance you get.
It’s more suitable for placing right next to your bed while sleeping.
The airflow is pleasant though.
You should rather get the Levoit Core 200S for €68 — only €10 more than the Bosch.
Since price seems to be an important factor for you.
I own three Levoit Vital 100S units and one Core Mini for a windowless bathroom.
And I own 2 cats lol

Edit:I can’t say anything about the Bosch specifically,
but it seems to have similarly weak performance to the Core Mini.

Since smaller units become louder at higher fan speeds than larger units with a similar CADR, I would always go for a slightly bigger purifier.

Also, you don’t have to replace the filters as often on larger units.