I know the SB-600 is probably the top choice...but yikes...almost $200 for one! Any cheaper but good flashes available? Something that will work with the D50 and not be in complete manual mode all the time, please. Most of the flash I need is for fill, but it would be nice to have the ability to be able to bounce or rely on a flash in a very dark situation. The in-camera flash is o.k. but it results in o.k. pictures.