Metz 58 AF-2 for Alpha 77

Hi all! Today I sold my Sony HVL-F58AM and I just ordered Metz 58 AF-2 to use with my Sony A-77 and the Sony 16-50/2.8. I want your opinions. I did this by having in my mind that in the past  I used the Metz 48 with my A550 and I was very happy. I will use the new combination in  wedding photography mostly. And replies will help me, thanks!