Is the Nikon 50mm f 1.4D worth the extra $200+ over the f 1.8?

I've been looking into the Nikon 50mm f/1.8D lens, but I'm still not sure if I should go for the f/1.4 instead. I want to be able to take pictures in low light, but is the extra 2/3 of a stop worth the extra $200+? From reviews I've read the 1.8 can do pretty well in lower light too.

If you really think about it the difference 4-tenths of a stop - so I'd say no.

I'm a Canon guy and I have the 50mm f/1.8 and I did this shot in room light, on a tripod just to illustrate what so many people seem interested in - dof.

Yes, the same way this lens is worth the extra dollars more than the f/1.4 even if it's a manual focus.

http://www.bhphotovideo.com/...f_1_2.html

I own a handful of 50mm lenses from f/3.5 to f/1.4. Between f/2 and f/1.8, there's not much difference in low light but when compared to f/1.4 shots, there's a very marked improvement.