Sigma Ef-530 Dg Super Powershot S5is Compatibility Mecablitz 44 AF-4 OR The Sigma EF-530 DG SUPER?

Mecablitz 44 AF-4 OR The Sigma EF-530 DG SUPER? - sigma ef-530 dg super powershot s5is compatibility

Looking to buy a flash for my Nikon D80 and want a third party flash unit, because they are much cheaper than the Nikon flash. As far as I the results of my search in these two rounded, Hiking, if anyone can help me to decide what to buy, or give opinions and comments about them. You can also let me know if it is dedicated to the Sigma flash, because I can not tell if it is.

Mecablitz 44 AF-4 or Sigma EF-530 DG SUPER

Thank Wrex