Of the lenses that I actually use regularly the sigma 105mm macro is probably least used.
Janice, from reading all this highly intresting thread i've decided not to buy a nifty.....
Regarding the comments on the subject of thenifty, it had already occurred to me that it was a shame mine got used so little. To that end, I have decided that I will have at least one day when we are away that I was take out the camera with ONLY the nifty on board, and see what the results are. Might force me to think more about what I'm shooting. Hmmm.....I'd best get myself a polariser I guess!