LOL, yeah... there are to many types of filtration available to have a "BEST". Plus, the type of fish, corals, etc. all play a part in what you need.
Sorry, if I didn't explain myself well above. Basically though, and this is personal opinion, on an aquarium of the size you are mentioning. I'd go with either a sump/fuge, along with a massive amount of live rock, sandbed, skimmer, and good water circulation. Thats basically called a "natural filtration method". Sounds almost like what you currently have.
Or
A wet-dry and skimmer. UV IMO has its benefits in fish only systems when you're not concerned with pod reproduction.
As for other systems to compare? Do a websearch fo wet-dry filters for aquariums.
If you want additional mechanical or chemical filtration, which is what the modules you've mentioned above will provide. Than I personally would Suggest a Marineland Magnum 350. Its a great add on. You can switch between a micron filter for water polishing or run carbon for chemical filtration. The Fluidized Bed Filter module attachment, I'm not sure about. In industrial water treatment they do work, for aquariums, theres some mixed reviews. Personally I can't say anything about that attachment.