Hi Aaron,
I have Canon 580EZ’s and they’re fine if used from the right distance.
If they struggle on a fill I move closer and shoot wider.
Whatever the top of the line Nikon on camera unit is would also be good.
(I don’t know the Sunpaks)
www.dsaphoto.com
A picture is thousand words that takes less than a second while a thousand words is a picture that takes a month.