I am in the market for new neutral density filters, and graduated neutral density filters. Listened to the podcast 77 on this topic, but I am still no wiser. On the one hand I understand that Cokin system has advantages: select the line of the horizon with the graduated filter; on the other hand, it is such a cumbersome system. Lots of parts that can easily fall into the water should you be close to a waterfall (Greg lost some filters this way, I am still laughing about it ... ). So I want to know if this is really such a big deal ... or if it would not be simpler to have just one filter to screw in. This way you would always have the horizon line in the center of the image, but since you know that, you could then compose your image for later cropping. Any thoughts?

Should I decide to go with the Cokin system for the grads, should I use the same system for the regular filters? I do not think Cokin makes anything stronger than an ND8 in the square one - at least I have not seen a stronger one. I am tending to get a B+W instead. Any thoughts?