have 30 + Reliable touring years from Bruce Gordon's racks , being Hand Made in His shop they were a reasonable Investment.
but yes if lowest price is your criteria, the Hoop type Black burn copies are OK.. for Ortlieb hooks the round holes
in the top plate can be filed or Dremel cut out to a square shape..
Or get one of Tubus' front racks. a bit more up front invested but will also last a Lifetime..