hey curious to know what you mean about "Chinese service sucking" since we're not international yet... are you referring to outbound calls to Chinese numbers, or something else?
I believe Twilio integrates directly with a single carrier (Level3). Last I checked they use/resell bandwidth.com for most of their calls.
-Jonathan (Voxeo CEO)
Voxeo also works with Bandwidth.com. "Bandwidth.com shares Voxeo's 'All-IP' worldview and as a result is an important voice network partner for us." --Jonathan Taylor, Voxeo CEO