Has anyone used the small Sb-400 Speedlight??? My choices now are this speedlight and this one: http://www.adorama.com/SU4000AFNK.html?searchinfo=Nikon Flash&item_no=1 Is Sunpak a bad brand? Has anyone used this? I mean I would obviuously RATHER get the Nikon one but the 400 is so small and it doesnt tilt? Or does it?