Tata has done a fabulous job with the Manza.. I was at the launch at NCPA on this 14th and was absolutely amazed by the overall product. The top end multijet diesel variant is rumoured to be priced at approx 7.5 Lakhs and that makes it a bargain as it has most features and space of a car one segment above it.
However Tata needs to ensure that the fit and finish and overall quality should be perfect. Tata now has a very good service network too.
I would advice test drive the car and wait for the first lot to hit the road before you put your money on it.