I agree, AC70 is a really good filter. But I would get a canister - much quieter and it doesn't require as much maintenance. I have 5 canisters running here in my living room and all I can hear are the 2 ACs on my quarantine tanks in the guest room. I know it's a little intimidating but there's nothing to be afraid of
If youre interested in that route, then we can suggest some cost effective solutions that would be on par with the AC70.