Here is one that got a good review and seems quiet affordable.
http://www.adorama.com/catalog.tpl?a...op=academy_new
There is a thread at CN about it.
http://www.cloudynights.com/ubbthrea.../o/all/fpart/1
I like these lens, you get color free performance for a fraction of the cost. Might have to save a few pennies and get one.
Regards
Fahim