I had purchase Panasonic mobile for my mom on last Diwali from SnapDeal website and the experience was good.
They had Diwali offer plus 10% cash back on transaction from debit card and both were successful. The delivery was done on time, no issues in the product, transaction was clear and I had no chance for complains.
The website worked nicely on peak hours and it had all the relevant information required for the product I purchased.
So I would trust shopping from this site.