What is the best type of filteration for a 55g?

Right now, I have one of the those old Marineland Bio-Wheels. Its a double with two of the wheels. But they so slow compared to the biowheel I got on my 29g. I think there are better options out there. What would you suggest?About the tank:Its semi-plants. A few plants and a few swords. There aren't a lot of fish, I'm trying to wait to see what I can get. But, I've got a pleco and red-tailed black shark. There are some zebra loaches too.

Alot depends on what and how many fish you plan to keep in your tank.(rule of thumb for fresh water,one gallon per one inch of fish not counting the tail) A canister type is,in my opion a bit better then those hang on the back type filters

Canister. The Fluval 404 is good. BTW, the speed that the bio wheels are turning is not important.

get a rena xp3 it is really powerful and u can get it for 100 dollars.