I found flipkart pretty amazing. I did shopping from flipkart for around 12 times and I never had any issues. first time I just tried this website for experience but now I am a fan.
All the 12 times, I got my goods much before the estimated delivery time which was always the best point of flipkart. the price is always amazon, at least for the products which I bought. many people said they had problem with returns but I personally never had any such issues.
The only bad thing is, sometimes its compulsory to download flipkart application which is quite annoying at times.