I really love the Mini nautilus with the stainless steel "T" window sleeve. It's looks great, better than the stock glass tank that comes with it.
So what about the full size nautilus? I don't care for the hollowed-out tank sleeve because I think it looks feminine. I don't like the all Stainless Tank because of the rounded top but mostly but also because it has no window to view the liquid level. The "T" sleeve is much more masculine looking. I think that is partially because of the more squared-off top.
Please, please, please make a 'T" sleeve for the full size nautilus! I would buy it for sure as soon as they would be available.