I have a 24' AG also. Don't know the model, but I have a Hayward 200 lb. filter and it has been easy to maintain for the past 8 seasons. Bought a new pump last year - 1/2 hp Hayward to replace a 1 hp pump. The smaller pump has been plenty for my pool along with my filter. I don't blame you for wanting to get rid of a cartridge filter. I know I wouldn't want to fool with having to clean one, although some people like them.