Lenovo A 7000 is a nice phone but at present there are other models of the same company Lenovo are available with better features and better looks Like Zuk 1 and K4 note. these two has got 3GB of RAM and it has got finger print sensor as well. I would recommend not to go for A 7000 as it is out dated now.
So I would say Lenovo Zuk 1 or you can go with K4 note as well the only difference between the two is their Internal Memory K4 has got 16 GB and Zuk 1 has got 32 Gb. Go with any of them though it will cost you a bit more.