I am thinking of trying some new things as far as filtering my tank since I will be getting my 540 shortly and would like to get the best possible set up i can. I know fluval came out with a FX-5 not to long ago. 900gph 400 gal max. looks like a great canister, i figure on my 225 would work fantastic. but they are like 300 bucks. for the same amount i can get that bio- rocker from fosters and smith. my wet dry i built works really well but my friend swears by his twin 404's. wondering everyone elses opinion on what is better.