Are you buying the tank or do you already own it?
I ask because the Fluval Spec V is a great tank, and the internal filter is absolutely silent. I have one in my kitchen and I can not hear it ever even with my head right next to the tank.
If you already own the tank, then sorry I am not familiar enough with brands to be able to advise you. However I have seen more then a few people filter a tank like that with an internal filter which I imagine would be quieter since it wouldn't have water flowing back into the tank.