Anyne have much experience with the new Kodak films, color neg., positive, and B/W? I mostly use PX 125 and TX 400 for B/W and ES 100 for color. I currently have about 6-10 rolls of each. Any recommendations for when I run out. I shoot mostly people shots, indoors and out, and reserve color for static scenes, buildings, scenic stuff. I have never tried Portra B/W. Is it any good? Thanks.