Coral Vue is Octopus, they are the master distributor's. Most, if not all 'Octo' products will also have the Coral Vue Logo, be it on the box or sometimes the unit itself. They are not knockoffs, that statement is false.
As for the pump, it comes with an OTP800 as stated on the product page and product box. We always sock the latest versions, therefore it is possible that this new unit differs from your old unit.
Your unit has a 1 year warranty, please feel free to contact us or Coral Vue should there be any issues with performance or fitment.