What difference are SB 80 DX AF and SB 800 AF


Dear Sir or Madam,

I am little confused which SB 80 DX AF or SB 800 AF is better. What difference? Which one is better? Why? Why not? I understand that the SB 800 Af is the newest model. Don't you mind to share your opinion and feedback? Thank you very much in advance.

Best Regards,
Kian-Guan Au