The 2026 are junk. If you buy it used you better plan on buying a new o ring. These filters are strange, that o ring gets old, but the filter wont leak until power is off. Had two of this model do this(both used), sold them and went with XP3s.
Neither of the two canisters are going to do a very good job filtering mechanically, but biologically either will be effective. An AC110 would be fine for a conventional 55g tank but not this one you've shown. You would either need to go with two HOB or a canister to effectively circulate the water in the tank. Tank is kind of a filtration nightmare.