Compass caravans are built by Eldiss, unless pre 1998, and in general are different from Eldiss mainly in the interior colours, which should not make any difference if you like the caravan. They should hold their price as well as any other make but in the PC owners surveys they have been bottom in all years except one for customer satisfaction and scored badly on build quality. They always seem well designed though, often better than the opposition.
The business was bought out last year by German firm Edwin Hymer and hopefully the quality issues are now being addressed.
The magazine website has not reviewed the 554 but you will find two other Camino ones and the Capiro 554 which is the next model up the range and has the same layout. You will also find a review on https://www.youtube.com/watch?v=VfpwcZip0lE