I would assess what you're using the cannister filter for? I have a Nu-clear cannister filter with a 25 micron pleated cartridge from Marine and reef. They are stackable and I should probably have a 100 micron prefilter and then the 25 micron polisher. However, I opted for just the 25 micron due to price. My goal was purely to polish the water. I didn't run filter socks at the time... Now 2 years later... I run a red sea roller mat. (I'm going through a roll of paper ever 2 weeks right now...) I have 2 25 micron filters that one I spray off with a garden hose and soak in bleach for 3 weeks while the other one is on the tank polishing the water. Even with the roller mat and the 25 micron filter cartridge. I'm still spending around a half hour cleaning the old filter cartridge and post rinsing the cleaned cartridge, then soaking the old cartridge in RODI and Prime to rinse off any left over bleach. Then placing the cartridge back in the cannister filter.
At 30 minutes every 3 weeks = nearly 9 hours a year I spend cleaning filter cartridges. That doesn't include the 10 minutes I spend every 2 weeks changing out the roller mat paper.
The downside of cannister filters is that if left unchecked a) they plug up with debris they're filtering out, so waterflow through them decreases, B) It's an area to build up detritus in salt water tanks and this becomes a nitrate factory. Instead of removing nitrates, the organics that build up over 2-3 weeks then break down into nitrates and fill your display with nitrates.
Imagine leaving a filter sock for 3 weeks? (Granted water would start overflowing the sock) but, it would generate all kinds of badness. If that happens in 3 days in a sock. Imagine 3 weeks in a filter? That said, I like my water being polished, so my nitrates are going to stay around 20 most of the time. . . If the reefmat catches up and I don't need to polish my water as much I may change out the filter cartridge to some type of carbon media.