This is one of the most reliable online shopping cart.
I don’t need to give a introduction to this site.
My review isbased on my experience with Amazon.
Speaking about the costumer care, they do reply to your queries and take initiate steps( even I got refunded and returned a couple product after talking to them) .
Amozon holds good quality product with them and have a lotof stocks.
When they give you a eastimated delivery, then it means it will reach you much earlier.( As I picked a delivery on( 28/06) but the eastimated date was( 03/07);.
App and websites both are so simple and wisely categorised to view and search things that you desire for. It also show the recently viewed items and items related to the items you saw lately.
Reliablity is a word that is said when you can completely depend on their products that have at least 2.5-3 level rating. Then you can surely go for it.
Hence I say that this is a best one to go for.