I have used Fluval, cobalt, oase, Eheim and sicce canister filters. All were used for Atleast 6 months to years.
Sicce Eko- love the priming mechanism but it leaked. Would love to try the whale.
Eheim- meh
Fluval- great. Cheaply built but the 07 series is pretty solid. I had one malfunction but I still use them. Just take care when moving flow lever.
Oase- the cats ass. Not perfect but that predicted is amazing.
Cobalt- the sleeper of the bunch. Pump is in the water so when you clean the filter, all you do is twist a lever and the hoses pop off and all you do is move the cannister. The pump stays running.