After coming from the film world and after a long absence from the hobby, I jumped back into the hobby with a D5000 Nikon. And yes, I'm having fun with it - mainly shooting action shots of my pitcher/son. But now I am looking at adding a flash unit. Being on a limited budget (2 kids in college) I'm looking at the Sunpak digiflash 3000. Anyonme have experience with this unit? Mainly for close-in and fill requirements. Or, comparable units on a small budget?