OK, so I'm new and don't know anything. A few weeks ago I learned a great deal about lenses from you guys when I originally asked about telephoto to shoot my kid's theater. Great thread, great advice and I learned a ton. I ended the thread by saying I wwas going to get a Canon with a 50mm/f1.4. Well...change of plans...I wound up buying a NikonD70 with the 18-70 kit lens from another MacRumors member. I'll probably still buy a prime, although this lens get's pretty good reviews. Anyway...my question is this...What flash unit do I want? I'll be hanging out backstage shooting "day in the life" stuff of the dancers, the rehearsals...just trying to get some practice by shooting people around the theater. Again, I'm a total noob...these things have features that I don't even know what they mean but am anxious to learn. I don't expect "pro" pics right away, but I want to head in that direction, so I want to invest in the right equipment and learn how to use it. Nikon sells the SB-800 or the more affordable SB-600, which I bet is fine for me? What about the off brands? Good enough? I have learned not skimp on lenses...what about skimping on flash? Please give a "fancy flash units" 101 for me and the other noobs.