Shit is the bomb.
If you can find the one with the duck on it, get that one, I think it is hotter than the rooster. The one made by Lee Kim Kee kinda sucks. I mean, it will do in a pinch, but it's not as good at the rooster.
We actually asked for Sriracha today at lunch for my girlfriend's tuna, because she ordered it seared "Shang Hai" style. Sadly, they didn't have any.