Nishant, I got my Zest XT Revotron 2 weeks back. Even my father was telling the same that why do you want to go with TATA. But when he saw the car, its quality and the features, he was very much happy with my selection. He was blown away with the features that Zest has got.
Dont move away from Zest just due to the waiting period. Its a wonderful car and you will not regret buying it and is worth the wait. I had to wait for 45 days to get it. I20 is a good car but that too has its issues. Just think over and take your family for a test drive and make them think.
It might seem that I work for TML, but actually I am so much happy with the car that I tell people to just have a feel of the car and then decide. Afterall they are taking it