[fkshiu]

If you don't mind ordering from the states Octopus and Warner Marine have a number of HOBs out now that are getting good reviews and come in cheaper than the Deltec HOBs.

The problem with the Remora is that it's underpowered. Mine didn't really start performing until I got a Mag5 on the end of it. The problem then was that the Mag would always be on the cusp of boiling the tank. The remora is also noisy, but that can easily be remedied with a wet paper towel over the injector. You can prevent the remora's o-ring from cracking by adding a little silicone grease occasionally, but AquaC will send you free o-rings if you ask them.