I have been using Flipkart for about 3years now. (Bangalore Location) Have ordered my smartphones, feature phones, Books, And Many other stuff.
Delivery has been on time every time not one miss (Really best part of Flipkart.)Products delivered are in good condition no issues there as well.
I would go on to say Flipkart is as good as Amazon.com (NOT the INDIA Jungle but the US AMAZON) only thing Flipkart lacks is numbers different Products, which I think Flipkart is taking it slow, but thats OK eventually Flipkart will get there.