Well my suggestion would be to do a FOWLR, you want a live sand bed, and 1.5-2.0 lbs of LR per gallon. A good protein skimmer is important. I would do an overflow into a sump where your skimmer, and heater and maybe a refugium would be held. The type of fish in this type of aquarium would be more on the community fish level. If you want an aggresive tank (triggers, lionfish, eels, puffers) then I think you do want a good wet/dry but you can go to the aggresive forum and ask about filters there. You can always do a wet/dry but I don't think they are absolutely necessary especially if you do want to convert your FOWLR into a reef someday (which many people do)