I am thinking about a Dolphin DX 4 cleaner I want to run it at night. I have the option of a bag, or for extra cost a filter cartridge system. I have a lot of leaves and acorns. Would the bag not fill as quickly and work better in my situation? The Local pool store that sells them is offering a 150 rebate right now on the dx4. They recommend the bag, but i see people on here saying the filters work really well. Has anyone used both?