If you are looking for an affordable phone that you want to use for a long time then you are looking for the right product.
Lenovo A6000 plus is comes in an affordable price with 5 inch touch screen 2 GB of RAM with 16 GB internal storage which can be extendable to 32 GB.
With 2300 mAh battery it wwight only 128grams .I have been using this phone since last 3 years and have not found any defect on this. This is a best choice in your budget. Excellent value of money excellent battery life.
With 8Mp rear camera the zoom quality is also good.
Overall excellent phone just go for it.