Hi Rick,

Thanks for the response. I've only started evaluating the drop in polarizers. That is one of the items I was hope to find a few online reviews to help me evaluate. I assume that there are good ones as Darwin Wigget talks about using one in this video comparing the Lee vs Cokin Z-Pro Holders: http://darwinwiggett.wordpress.com/2...-z-pro-holder/.

Right now I am planning on keeping my screw-in B+W polarizers as I often screw them in and walk around all day with them on the front of my lens and I see the Z-Pro system more of something for when I am taking the time to set up a shot. So, this is really about the solid and grad ND filters. I'll probably bring in a few high end filters and try them out.

Thanks,
Brant