Also the uv system will deplete the chlorine more quickly. Its really only practical for indoor pools and large commercial pools in special cases. Your average outdoor pool will not see any appreciable benefit from using ozone.
As far as which type of filter is best it really depends on your situation. Do you get a lot of organic debris, or blowing dust in your yard? Would your family be heavy sunscreen users? Are there water restrictions in your area? Some areas require a DE separation tank to manage the used DE from the filter. A large cartridge or sand filter would be easier to maintain than a DE filter in these cases. I must say DE really does add a nice polish to the water. I had a DE filter for several years and I loved the clarity, but cleaning it was a pain. I replaced it with a sand filter.
As far as equipment brands, any of the major brands will give you a good product. I would make sure whoever you buy equipment from was an authorized dealer for whichever equipment they sell so that they can handle any warranty issues that come up.
As far as which type of filter is best it really depends on your situation. Do you get a lot of organic debris, or blowing dust in your yard? Would your family be heavy sunscreen users? Are there water restrictions in your area? Some areas require a DE separation tank to manage the used DE from the filter. A large cartridge or sand filter would be easier to maintain than a DE filter in these cases. I must say DE really does add a nice polish to the water. I had a DE filter for several years and I loved the clarity, but cleaning it was a pain. I replaced it with a sand filter.
As far as equipment brands, any of the major brands will give you a good product. I would make sure whoever you buy equipment from was an authorized dealer for whichever equipment they sell so that they can handle any warranty issues that come up.