H1B stamping from Singapore consulate success rate


I am working in Singapore from more than a year. My H1B petition is valid till Dec 2013. As per my I797, I should appear for Visa interfer in Hyderabad consulate.
I would like to know the present success rate in Singapore consulate? If we provide all the documentation, still are the chances of issueing 221(g) slip are more?

If it is not recommended to appear in Singapore, I should plan to travel to India for the stamping.

Kindly advice.