King hubs. all the way. definitely the loudest with a pitch that will make anyone know you're coming. but if you're depending on a hub to let people know you're coming, if you're going fast and pedaling, then you won't hear the hub at all, if you're coasting, you're not going fast enough... and they're completely re-buildable. as for rims. are you looking for lightweight. go mavic like someone suggested before.. 823 or 729 then you've got yourself a nice $500 rear wheel or so.
ok the reasen i need a really strong hub and not some cheap shit one is because i have a tendency to explode hubs, bearings get broken, the axle breaks and scrapes against the inner hub part, the ratcheting strips. that happend to my last hub all at once and just destroyed the rim (never go off the big rock drop on dirt merchant with high pressure in the shock). and also how much are abbahs and hope pro 2???
Hope Pro 2, ringle Abbah, or the Dt 440 hubs are all pretty loud. They can be made louder as well by pulling them apart, wiping out all the grease, and using tri-flow to lube. Mag 30 prlly the strongest rim in existence... though the Atom Lab pimps are pretty bad ass