On my 55g I have an AC110, Whisper 60, Fluval 404, and a Powerhead with a Quickfilter. I use AC110, Whisper 60, and the PH for mech. 404 is filled with bio media. AC110 has a small bag of Bio Max on top of the Sponge.
Eheim and Fluval are the Canisters I use and recommend. Though I still want to check out/own a Rena XP series.