Have no fear about Velvia 50 being phased out - RVP 100 rocks - almost identical palette, an extra stop of speed, finer grain, less "pepper" in scans and MUCH better reciprocity. RVP100 is simply much improved RVP. I have been shooting it in 120 for about 18 months (my wife picked up a stash in Japan). Unlike Kodak, Fuji seem to have a better idea about changing a good thing...