If you want to use a canister filter, there is nothing wrong with that. I used one on my 60g cube for the entire 22 years it was running. I found that it was best used as a place to run carbon and keep a little spare LR rubble. The (already mentioned) downside is the need for cleaning, which does become a chore. If it is a PIA, you will not want to do it as often as you should.
If your primary use is as a detritus remover, either filter socks in the sump or even a HOB filter (I used a Marineland Emperor on the 60) is the way to go.
hth
Oh - and after the first 15 or so years of regular cleanings (every 2 weeks), I switched to every 6 - 8 weeks with no noticable difference in parameters - Nitrates might have gone up a bit, but because it was primarily a soft coral and zoanthid/palythoa tank, the dirtier water was a bonus.