Singh-Ray is running a sale right now thru 6pm tonight on all filters, Ive been wanting a reverse grad nd for awhile and this is the perfect opportunity. I just don't know if the 2 or the 3 stop would be better?

http://singh-ray.com/reversegrads.html

 

That's a coin toss, you can always go with a two stop and if you need more, throw a one stop GND in front.

 

Ended up going with the 3 stop. And from what i've read Singh-Ray is about as good as you get as far as drop in filters go.