Confused between HTC Explorer, Nokia Lumia 510 and Sony Xperia Tipo. Please help?

As per my budget which is less than 7,000. i somehow manage to shortlist three best branded smartphone under this category. The phone names as one from HTC named as HTC Explorer and the other one is Nokia Lumia 510 while the third one is Sony Xperia Tipo. All these three smartphone fall under the range of 6.5K at snapdeal.

So which one to get? All of these fit in my budget...

Gaming is not my constraint as well as memory. Please help?

I think you should go with sony xpeira tipo a nice phone with 3.2 inches and fine specifications under such price tag.