http://www.bhphotovideo.com/bnh/controller/home?O=Search&A=details&Q=&sku=12182&is=GREY&addedTroughType=search
or the Tamron 90 macro, which gives you macro capability and a portrait lens, two in one.
http://www.bhphotovideo.com/bnh/controller/home?O=Search&A=details&Q=&sku=330641&is=USA&addedTroughType=search