I bought Lenovo G50-70 Notebook(4th Gen Ci3/ 8GB/ 1TB/ Win8.1/ 2GB Graph)(59-436417. No doubt for this configuration and price combination its completely worth buying.
There are some issue which I am facing like:-
1) Laptop build(body) is not great.
2) Even after having this awesome configuration, windows start up takes lot of time.( This is known windows 8.1 issue but I was expecting less time to boot and unfortunately expectation not fulfilled).
3) Laptop comes with dolby sound but the quality is not that good.
Other than above 3 issues, laptop is good.