Be cautious with SC. My helmet was a bad pull, and I didn't know any better at the time. You can see the leading edges are different lengths. Makes the helmet very hard to close properly.
SC agreed to replace it, but then stopped responding to emails. Multiple emails later and 2 months later, I doubt I'll hear from them again.
I can't say if the other suppliers are better or worse, but whoever you buy from make sure you have someone who knows the gear to inspect it straight away and identify any faults.