dpreview has a lens review section. The Tokina wide angle got pretty good reviews and is half the price of a Nikkor. I buy everything I can from CL but as with anything, the evaluation is as much about the seller as the product.
Paul McCumber - Longmont, CO
1995 FZJ80 - 2003 UZJ100 - 2013 Mini Cooper S Hardtop - 2013 Toyota Prius
"It's a 1970 Firebird, the car I've always wanted and now I have it. I Rule!" Lester Burnham - American Beauty