I didn't have any Czech yeast available, unfortunately (LHBS was out), so I split it between 34/70 and WLP833. So, it was missing that little hint of diacetyl that I like in my Czech lagers, but the squeaky clean German lager yeasts worked fine. Truth be told, I could not tell any difference between the two.
It had a nice amber color, a tad darker than a marzenbier. I think it is close to style, but I confess the only Czech amber beers I have ever tasted have been the American interpretations, like Full Sail's Session Festbier. When my wife and I visited the Czech repubic in 2002, the only choices were light and dark. I did get to drink the light table lager of the Czech republic - Gambrinus.
Durst Turbo Vienna is regular Vienna, but with I believe more diastatic power than regular Vienna, so that it converts itself better. It was the last of an five year old bag.