I would go with a sump.
Everyone will say that the biggest benefit of the sump is a place to put all your equipment.
I say the biggest benefit of a sump is never seeing the evaporation line in your display tank. Since your DT is always under pressure, it always looks full, and the only place you have to watch for evaporation is the return chamber in your sump. No more surprise guests telling you 'hey man, you need to fill your tank back up, why is the water line so low...' :D
And skimmers are fickle creatures. If you have one in your sump and the skimmer overflows, it'll just boil over into your sump. It's not good for the inhabitants, but it's not good for it to dump out all over your carpet and electrics like a hang off would, either.