Well my mag350 is starting to breakdown and finally i get to shop for a new filter. My pet store carries the 05 series fluvals(no fx5, its like 500-600 bucks here) and rena xps and im pretty sure they carry those new canisters by marineland, i think there called the c-series or something. So any positive/negative feedback about these filters would be great aswell as what you would pick. tanks a 50g btw;