What size tank are you looking to upgrade too? If it between a 55 - 75gal the fluval 406 is a good choice. Larger and your starting to go into FX-5 territory.
If you mean knock off canisters ... I'll honestly say stay away. A quality filter is something you don't want to skimp on.
75g Planted Barbs Denison, BlackRuby, Tiger, Albino Tiger, Green Tiger, Cherry, Gold, Checkered, Odessa.
NonBarbs Cardinal, Neon, RummyNose, Bloodfin Tetras, Z. Danios. 1RTS. Amano, Bamboo, Ghost & RCS. 20g Long Shrimp Tank RCS, Tiger, Amano.