Hello Arun,
Wait for sometime. The FST6 radio on quadkopters.com is a good one for a beginner. Also, the RCB6i has a good repute.
Both are out of stock right now. You'll have to wait for sometime. Why not talk to the store owners. Satya gupta from quadkopters and Rcbazaar both are on this forum. You can PM them.
Well, so is your quadcopter complete?