Hi there! it's time I get a macro lens for my kit. Ive narrowed it down to these 3, which cost roughly the same: tamron 90mm 2.8. mwd ~10mm. tamron 60mm 2.9. mwd ~10mm. nikkon 85mm 3.5. mwd ~14mm. Nikkor's pros seem to be the working distance, but is 4cm worth it? Cons are the slower aperture and longer FL for dx format, as far I can see. Tammy's 60mm pros are goood FL for dx and non-extending barrel (is that even a pro?) compared to tammy 90. Also, faster due to wider aperture. Tammy 90, im not really sure. it's faster than 85mm nikon, but less working distance. Extending barrel (again not sure if good or bad). Cons are longer FL for dx. What do you say guys? Enlighten me please!