Redmi 2 prime, this is the best budget phone for now. Just make sure that you are taking prime version otherwise you will get less RAM for just Redmi 2 version with less storage. Prime version of this phone is simply awesome. You are getting very much good specifications in only 7000 Rs.
I am having this phone since 8 months, and I found no complains in any section. Camera quality is quite good in this price tag. Battery performance is always good in Xiaomi devices, so you can expect same performance with this phone too. Plus with miui operating system you can expect all the features which you only get in latest android operating system. You will get all customization options as well. No hangs during gaming and multitasking.
So if you are looking for budget phone with good specifications then just go for it without a doubt.