I purchased this Reliance netconnect, around 4 years back in Hyderabad. Since then it is always giving a reliable operation. At the worst I need alter the USB socket on my laptop, once in a while.
The 2GB per month for post paid is around 333+, which is more than enough for my use, and I find it to cost effective. Very rarely, I need refer to customer service to know that it is a problem else where and the system becomes operative with in no time.