I have to disagree with your assertion that HOBs aerate the water better than canisters. I've seen a couple other people on this forum say the same thing, but it's simply untrue. Most canisters can be set up however you want, from virtually no surface movement to far more than any HOB can manage....Plus the HOB filters add in aeration that most canister setups don't - no need for bubblers!
And what additional maintenance? I swish the cartridge in old tank water once a week, that's it!