you should go with a standerd wet/dry just because of easy maintance. if your going to do big fish your going to need a huge bio load. in order to get that you need lots of airiation. your not going to get that with a canister filter. i've done freah water fish and for me a wet/dry was a must. since your not doing plants your CO2 is going to be high with a canister
350 gal. 7\'x36\'\'x25\'\'tall, , 3-400w.mh-10k, 2-6\' vho actinic, 175gal.sump, 6ft. 100gal zenia fuge,calcium reactor, kalk reactor and a carbon reactor. 7\' turbofloter 5000 skimmer.