Nanocube or eclipse aquariums

Greetings, I'm in the market for a compact marine fish only system and
have some questions regarding different options that are out there.
Here are my primary considerations:

1. Size. I live in a 1 bedroom apartment so I want something in the
15-25 gallon range. This is also why I want to get a system that is
"all in one" such as the nano cube, aquapod or eclipse.

2. Price. I want quality but not more firepower than I need for a fish
only system. It seems the nanocube and aquapods are better quality and
have better components than the eclipse models, but I'm not sure I need
the bells and whistles. I certainly don't want to spend more than I
need to.

3. Noise. I really want to keep the noise (especially mechanical noise)
to a minimum.

I've asked around at a few stores and if they have they nano cube thry
urge that system and if they don't they urge the eclipse. If anyone has
any advice regarding my options I'd really appreciate it. Thanks in
advance.

Ryan