I agree. There will always be that random filter that can be difficult, but stick to your main brands and you should be OK. Canisters can have more bells and whistles so if any of those appeal to you, by all means. GPH would be the only thing to pay attention too.
look into aquatop cf300 264gph 3 big media trays and only 100 bucks i have the cf500uv and so far i love it great flow and quiet as a mouse
aquatraders.com