Posts like these makes me realize i might have to try them both before buying. 3 months ago i would have simply bought bought both. Now I'm counting my cents.
Nautilus still sounds like the better deal.
If I could only have one it would certainly be the Nautilus @CraftyZA but that being said I will be getting a second Aerotank because I think I'm going to put it on the VTR because I don't think the Nautilus will fit.