Inferior quality at excessive price

When my razor (a Arcitec 1053) after 2.5 years demanded a new shaving head I did not really long and hard about what to do. Although the price of replacement shaving head was reasonably high at just under 50 but the razor as such was too expensive for him to throw away with ~ 130 because of the shaving head. So I looked not long in the reviews but have just ordered.
That was a mistake in this case.
I was with the quality of Philips shavers have always very satisfied so this shaving head is a bad joke! I can only advise against any order to this spare part!

For at least 1/3 of the price you get a really razor inferior part.
A) The coupling to the housing is insufficient. This was the original shearing metal head. When spare parts it is made of an unsuitable plastic. With the same use as before the shaving head falls even occasionally while shaving the shaver! That's never happened to me with the original and it is very annoying!
B) Secondly, the quality of shaving only about the first 10 shaves is better than the old shaving head. It seems that the new head also wears correspondingly quickly. Much more, however, annoys me that the entire shaving head quite often drops.