Bosch, Neff and Siemens are basically all owned by the same company.
They seem to be positioned in that order too in terms of quality/features & price.
My opinion is that if you bought a Neff oven 10-15 years ago, you would now need to by a Siemens or Miele to get the same quality. I'm not saying there is anything wrong with them, just that the product/market has changed over time.
Bosch itself seems to be split into 2, with some ranges being more budget and no better than other brands, but they are trading on their name.