You might consider Lenovo - their reliability is high. I used to be a fan of Dell, but not so much these last couple of years. Acer and Samsung are good, but they have some nitpiks too. The Ideapad Yoga is an interesting model - it has a touchscreen and can be used like a tablet. Comes in 11 and 13" versions.
I checked out the Ideapad... but it is way beyond the budget, at INR65000. My budget is INR45000(~900$).