best lens for realistic money would be the sigma 180mm f3.5 macro I would think.
Its on par in quality with the canon 180mm macro - whilst being half the price - and the canon 180mm is thier top range macro
http://www.juzaphoto.com/eng/articles/sigma_180mm_macro_review.htm
After that I would say sigma 150mm f2.8 is a slightly cheaper macro lens which also has a good working distance.
Both the 150 and 180mm sigmas will work very well with sigma teleconverters - the 1.4 with almost no loss in quality and the 2* with minimal loss (the 2* also makes the macro from a 1:1 to a 2:1 - which means a larger magification - which whilst being a real pain to work with at times - it is still a great way to get more out of the lens.)
After that there is the nikon 105mm macro with VR - which as already said, won't help with macro work at all, but is a boon for non macro usage - very tempting, but not essential for macro work.
There is also the sigma 105mm macro - this won't work with the sigma teleconverters - I am unsure if the nikon will work with them or not.
I also hear that the sigam 105 will work with tamron teleconverters
I am not worried about portrait pictures too much. I will be using the macro for small bugs and flowers.
Mark
Im pretty sure that this should be in a new thread, but I figured Id ask here first. I wanted to ask what all types of situations a macro lens would work in. I mean is it just up-close images?
Mark
A 100mm macro lens is a simple 100mm lens in all respects - however it has extra lens elements that allow it to close focus ( in the case of proper prime macro lenses this is down to cms from the subject) which allows you to get those close up shots - there is also a level of maginification in them - most are 1:1 (lifesize on the sensor).
So you can use your macro - like others said- as a general portrate lens.
for me part of the appeal of the 150mm was not only that it has a greater working distance (you can get 1:1 focusing without being as close as with a shorter focal length lens - though we are talking cms here) but also that it can make a good general wildlife prime lens as well.
Something which helps me that I seldom see mentioned is inhalee - fire shutter release - exhale.I just shoot handheld with a non-VR macro lens. I also use a Speedlite 430EX, which helps alot. The handheld thing is just something you have to do alot and then you'll get better and better in it.