I've never heard a Viennese crash cymbal sound very good as a suspended. I did have an 18" French cymbal (the other half of the pair had cracked) that was great as a suspended.
Sometimes people hear brightness and darkness backwards. What I mean is, the heavy Germanic cymbals have a crisp attack that can be confused with a bright sound. It's the tone/ring that is dark. Vice versa with French which have a very soft/warm attack.