Hey all, I'm looking to buy a 50mm (or equivalent) lens for my friend. She's kind of low on cash, and I owe her a couple birthdays' worth of presents (to say nothing of Hanukkah presents). She has a Nikon D80, so I was looking at the Sigma 30mm f/1.4, the Nikon 50mm f/1.4D, and the Nikon 50mm f/1.8D. I know that the Sigma has crap QC issues, and I've read a lot about the minor differences between the two Nikons (2/3 of a stop, slight bokeh diff., slight CA diff., slight distortion diff.). Price isn't a factor other than it being less than 400USD, so I was planning on buying the 50mm f/1.4D for 300 at Amazon. If you can recommend a cheaper price/better lens, I'd really appreciate the help!