Can you recommend the best bang-for-buck Nikon on that list?
I would say go for the IS version. Simply because you don't need to use your tripod anymore for shooting aquarium macros. With the IS lens, you are more able to shoot macros "on the fly". I've using one on my EOS 5D and I'm totally thrilled by it's stunning performance.
These were shot a couple of days ago, freehand.
A freehand shot of my bass guitar, pretty narrow DOF.
A freehand shot of a wild Capri lizzard, sharp and detailed.