Aqua Clear hands down.
Filters with biowheels (such as the Marineland brand) are more gimmick and hassle.
This is just my opinion, but I have a lot of tanks, and experience with both kinds. They all work, but for HOB
, give me an Aqua Clear any day.
I have thrown the biowheel componant out the filters I still have that use them.
If you have the space and the cash, cannisters are even better, especially on a 55 like yours. HOB
will still work though.