Looking at investing in a new filter system - just given my Cokin gear away as I had trouble using it with my 16-35mm lens - thinking of getting the Lee system but feel I won't get full use from the triple ND Grad sets - so thinking of getting the holder, plus the soft and hard 0.6x Grads... But has anyone tried a comparable reverse grad or colour filter in particular with sunrises and sunsets. Cheers !