Why do you change the media? What media are you referring to? It takes me probably less than 5 minutes to clean a canister. I do a water change on my tank every week, and cleaning the canister is the first step. I scoop a small bucket of water, put my filter media in the bucket, hit the bottom with a quick brush, dump the water, reinsert the media, fill with water, and done. You probably don't have to clean it this often, but it's easy and I like to keep my tank clean.
I don't get why people think cans are such high maintenance. There is nothing to it, and it works way better than a HOB. I have 35,50,110 both Tidal and AquaClear hobs, which don't even come close to a canister. I have run HOBs with just media and floss, with the inTank inserts, and an AC110 with a refugium. None of them come close to effectiveness from a mechanical view, and you can run media reactors with canisters, which you can't do with a HOB.