Mine only takes a few minutes once every week to two weeks, depending on how much dirt I disturb.
Usually with the XP filters all you need to do really is rinse out the foam pads and replace the micron pad when it clogs. Only takes a few minutes. Be sure though to rinse out the pads in OLD tank water, like when doing a water change. DO NOT rinse them out under tap water.
The Micron cartridges for the Magnum filters are a little more work. For a 350, all I do is disconnect the hoses, transport over to the sink, replace the cartridge, hook it back up and turn back on. To clean the cartridge though you need to soak in a 1/3 bleach solution (1 part of bleach to 3 parts of water) over night, and take like a garden hose or something that has some pressure to it, and spray out all the junk. Works like a charm. Been running those micron cartridges 24-7 for about 2-3 months, never have seen cleaner water. Never had to replace those cartridges either.