Look for a Canon 550 EX used, its almost the same as the 580 and you should be able to pick one up at your high end suggested budget. I purchase used all the time and I don't take ownership unless the lens, camera, strobe, looks prestine. Vivitar has a budget but quality flash that followed its tank of a workhorse film flash, but modified for digital, can't remember the model number. But like I said, consider used.