What I liked about this cymbal is its shimmery blast of sound that hits you in milliseconds of hitting the cymbal. They didn't call it a Fast Crash for nothing.
What I did NOT like about it was that I found it a bit thin and anemic sounding for a 16" cymbal. It had the sustain of a 16" or larger, but the wimpiness of a 14" or 15" crash. It lacked fullness. Even its sustain was just the tone lingering, and not a full reverberation of the cymbal. It is probably due to the thin-ness of the cymbal, its fairly lightweight. It seems like to achieve the "fast" crash that this cymbal is named for, it had to lose any fullness or deep sustain that it could have otherwise had had it been a more substantial cymbal. Its a trade-off for sure, and a trade-off I'd rather not make.
So in my opinion, I would never use this cymbal in a rock band, even though much of the A Custom line-up is perfect for everything from mellow rock to aggressive rock music. I would maybe check out the 14" or 15" Fast Crashes as a more splashy cymbal in the future but the 16" has no place on my kit. I could reccomend trying out this cymbal to anyone who plays more modern jazz or fusion type playing. They might appreciate the mellow sustain and punctuated "fast" crash sound of this cymbal.