I bought sndisk micro sd card of 8 gb from flipkart a year ago. and it worked just great.
I faced no problems in installation of card. its very easy.
Also using the card is so easy. everyone with below average technical knowledge also can use it very easily. a help manual came along with it. which includes instructions and precautions about its use.
As I mentioned above, functionality it quite good.
And one feature that I liked most and is so useful is- the data transfer speed, which is quite satisfying, and great.
As we talk service and support, though I didnt have to face any situation with this product, but they are very easily approacable and helpfull.